1
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Musalov MV, Potapov VA, Maylyan AA, Khabibulina AG, Zinchenko SV, Amosova SV. Selenium Dihalides Click Chemistry: Highly Efficient Stereoselective Addition to Alkynes and Evaluation of Glutathione Peroxidase-Like Activity of Bis( E-2-halovinyl) Selenides. Molecules 2022; 27:molecules27031050. [PMID: 35164315 PMCID: PMC8838769 DOI: 10.3390/molecules27031050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/29/2022] [Accepted: 01/31/2022] [Indexed: 11/23/2022]
Abstract
Highly efficient stereoselective syntheses of novel bis(E-2-chlorovinyl) selenides and bis(E-2-bromovinyl) selenides in quantitative yields by reactions of selenium dichloride and dibromide with alkynes were developed. The reactions proceeded at room temperature as anti-addition giving products exclusively with (E)-stereochemistry. The glutathione peroxidase-like activity of the obtained products was estimated and compounds with high activity were found. The influence of substituents in the products on their glutathione peroxidase-like activity was discussed.
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2
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Xu S, Guo A, Chen NN, Dai W, Yang HA, Xie W, Wang M, You QD, Xu XL. Design and synthesis of Grp94 selective inhibitors based on Phe199 induced fit mechanism and their anti-inflammatory effects. Eur J Med Chem 2021; 223:113604. [PMID: 34174740 DOI: 10.1016/j.ejmech.2021.113604] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/17/2021] [Accepted: 06/01/2021] [Indexed: 01/08/2023]
Abstract
Glucose-regulated protein 94 (Grp94), a member of the Heat shock protein 90 (Hsp90) family, is implicated in many human diseases, including cancer, neurodegeneration, inflammatory, and infectious diseases. Here, we describe our effort to design and develop a new series of Grp94 inhibitors based on Phe199 induced fit mechanism. Using an alkynyl-containing inhibitor as a starting point, we developed compound 4, which showed potent inhibitory activity toward Grp94 in a fluorescence polarization-based assay. With improved physicochemical properties and suitable pharmacokinetic properties, compound 4 was advanced into in vivo bioactivity evaluation. In a dextran sulfate sodium (DSS)-induced mouse model of ulcerative colitis (UC), compound 4 showed anti-inflammatory property and reduced the levels of pro-inflammatory cytokines (TNF-α and IL-6). Together, these findings provide evidence that this approach may be promising for further Grp94 drug development efforts.
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Affiliation(s)
- Shicheng Xu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Anping Guo
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Nan-Nan Chen
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Wei Dai
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Huan-Aoyu Yang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Wenqin Xie
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Mengjie Wang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Qi-Dong You
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
| | - Xiao-Li Xu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
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3
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Xie Z, Xiang C, Li X, Fan C, Chen T, Liu M, Ma Y, Bai F, Tang W, Hu Y. Discovery of Potent Antiallergic Agents Based on an o-Aminopyridinyl Alkynyl Scaffold. J Med Chem 2021; 64:13588-13603. [PMID: 34476950 DOI: 10.1021/acs.jmedchem.1c00976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Effective therapeutic agents are highly desired for immune-mediated allergic diseases. Herein, we report the design, synthesis, and structure-activity relationship of an o-aminopyridinyl alkyne series as novel orally bioavailable antiallergic agents, which was identified through phenotypic screening. Compound optimization yielded a highly potent compound 36, which effectively suppressed mast cell degranulation in a dose-dependent manner (IC50, 2.54 nM for RBL-2H3 cells; 48.28 nM for peritoneal mast cells (PMCs)) with a good therapeutic index. It also regulated the activation of FcεRI-mediated downstream signaling proteins in IgE/Ag-stimulated RBL-2H3 cells. In addition, 36 exhibited excellent in vivo pharmacokinetic properties and antiallergic efficacy in both passive systemic anaphylaxis (PSA) and house dust mite (HDM)-induced murine models of pulmonary allergic inflammation. Furthermore, preliminary analysis of the kinases profile identified Src-family kinases as potential targets for 36. Compound 36 may serve as a new valuable lead compound for future antiallergic drug discovery.
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Affiliation(s)
- Zhicheng Xie
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, No. 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Caigui Xiang
- Laboratory of Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Xin Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, No. 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Chen Fan
- Laboratory of Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Taiwen Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, No. 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Moting Liu
- Laboratory of Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yanjie Ma
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, No. 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China
| | - Fang Bai
- Laboratory of Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Wei Tang
- Laboratory of Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Youhong Hu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, No. 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Hangzhou 310024, China
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4
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Al-Khawaldeh I, Al Yasiri MJ, Aldred GG, Basmadjian C, Bordoni C, Harnor SJ, Heptinstall AB, Hobson SJ, Jennings CE, Khalifa S, Lebraud H, Martin MP, Miller DC, Shrives HJ, de Souza JV, Stewart HL, Temple M, Thomas HD, Totobenazara J, Tucker JA, Tudhope SJ, Wang LZ, Bronowska AK, Cano C, Endicott JA, Golding BT, Hardcastle IR, Hickson I, Wedge SR, Willmore E, Noble MEM, Waring MJ. An Alkynylpyrimidine-Based Covalent Inhibitor That Targets a Unique Cysteine in NF-κB-Inducing Kinase. J Med Chem 2021; 64:10001-10018. [PMID: 34212719 DOI: 10.1021/acs.jmedchem.0c01249] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
NF-κB-inducing kinase (NIK) is a key enzyme in the noncanonical NF-κB pathway, of interest in the treatment of a variety of diseases including cancer. Validation of NIK as a drug target requires potent and selective inhibitors. The protein contains a cysteine residue at position 444 in the back pocket of the active site, unique within the kinome. Analysis of existing inhibitor scaffolds and early structure-activity relationships (SARs) led to the design of C444-targeting covalent inhibitors based on alkynyl heterocycle warheads. Mass spectrometry provided proof of the covalent mechanism, and the SAR was rationalized by computational modeling. Profiling of more potent analogues in tumor cell lines with constitutively activated NIK signaling induced a weak antiproliferative effect, suggesting that kinase inhibition may have limited impact on cancer cell growth. This study shows that alkynyl heterocycles are potential cysteine traps, which may be employed where common Michael acceptors, such as acrylamides, are not tolerated.
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Affiliation(s)
- Islam Al-Khawaldeh
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Mohammed J Al Yasiri
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Gregory G Aldred
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Christine Basmadjian
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Cinzia Bordoni
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Suzannah J Harnor
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Amy B Heptinstall
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Stephen J Hobson
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Claire E Jennings
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, U.K
| | - Shaimaa Khalifa
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Honorine Lebraud
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Mathew P Martin
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, U.K
| | - Duncan C Miller
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | | | - João V de Souza
- Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Hannah L Stewart
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Max Temple
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, U.K
| | - Huw D Thomas
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, U.K
| | - Jane Totobenazara
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Julie A Tucker
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, U.K
| | - Susan J Tudhope
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, U.K
| | - Lan Z Wang
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, U.K
| | - Agnieszka K Bronowska
- Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Céline Cano
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Jane A Endicott
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, U.K
| | - Bernard T Golding
- Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Ian R Hardcastle
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Ian Hickson
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, U.K
| | - Stephen R Wedge
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, U.K
| | - Elaine Willmore
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, U.K
| | - Martin E M Noble
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, U.K
| | - Michael J Waring
- Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
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5
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Chang X, Zhang J, Peng L, Guo C. Collective synthesis of acetylenic pharmaceuticals via enantioselective Nickel/Lewis acid-catalyzed propargylic alkylation. Nat Commun 2021; 12:299. [PMID: 33436637 PMCID: PMC7803749 DOI: 10.1038/s41467-020-20644-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 12/08/2020] [Indexed: 02/08/2023] Open
Abstract
Chiral acetylenic derivatives are found in many bioactive compounds and are versatile functional groups in organic chemistry. Here, we describe an enantioselective nickel/Lewis acid-catalyzed asymmetric propargylic substitution reaction from simple achiral materials under mild condition. The introduction of a Lewis acid cocatalyst is crucial to the efficiency of the transformation. Notably, we investigate this asymmetric propargylic substitution reaction for the development of a range of structurally diverse natural products. The power of this strategy is highlighted by the collective synthesis of seven biologically active compounds: (-)-Thiohexital, (+)-Thiopental, (+)-Pentobarbital, (-)-AMG 837, (+)-Phenoxanol, (+)-Citralis, and (-)-Citralis Nitrile.
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Affiliation(s)
- Xihao Chang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Jiayin Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Lingzi Peng
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Chang Guo
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China.
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6
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Khan I, Ibrar A, Zaib S. Alkynoates as Versatile and Powerful Chemical Tools for the Rapid Assembly of Diverse Heterocycles under Transition-Metal Catalysis: Recent Developments and Challenges. Top Curr Chem (Cham) 2021; 379:3. [PMID: 33398642 DOI: 10.1007/s41061-020-00316-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022]
Abstract
Heterocycles, heteroaromatics and spirocyclic entities are ubiquitous components of a wide plethora of synthetic drugs, biologically active natural products, marketed pharmaceuticals and agrochemical targets. Recognizing their high proportion in drugs and rich pharmacological potential, these invaluable structural motifs have garnered significant interest, thus enabling the development of efficient catalytic methodologies providing access to architecturally complex and diverse molecules with high atom-economy and low cost. These chemical processes not only allow the formation of diverse heterocycles but also utilize a range of flexible and easily accessible building units in a single operation to discover diversity-oriented synthetic approaches. Alkynoates are significantly important, diverse and powerful building blocks in organic chemistry due to their unique and inherent properties such as the electronic bias on carbon-carbon triple bonds posed by electron-withdrawing groups or the metallic coordination site provided by carbonyl groups. The present review highlights the comprehensive picture of the utility of alkynoates (2007-2019) for the synthesis of various heterocycles (> 50 types) using transition-metal catalysts (Ru, Rh, Pd, Ir, Ag, Au, Pt, Cu, Mn, Fe) in various forms. The valuable function of versatile alkynoates (bearing multifunctional groups) as simple and useful starting materials is explored, thus cyclizing with an array of coupling partners to deliver a broad range of oxygen-, nitrogen-, sulfur-containing heterocycles alongside fused-, and spiro-heterocyclic compounds. In addition, these examples will also focus the scope and reaction limitations, as well as mechanistic investigations into the synthesis of these heterocycles. The biological significance will also be discussed, citing relevant examples of drug molecules highlighting each class of heterocycles. This review summarizes the recent developments in the synthetic methods for the synthesis of various heterocycles using alkynoates as readily available starting materials under transition-metal catalysis.
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Affiliation(s)
- Imtiaz Khan
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
| | - Aliya Ibrar
- Department of Chemistry, Faculty of Natural Sciences, The University of Haripur, Haripur, KPK-22620, Pakistan
| | - Sumera Zaib
- Department of Biochemistry, Faculty of Life Sciences, University of Central Punjab, Lahore, 54590, Pakistan
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7
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Park JR, Bolle ECL, Santos Cavalcanti AD, Podevyn A, Van Guyse JFR, Forget A, Hoogenboom R, Dargaville TR. Injectable biocompatible poly(2-oxazoline) hydrogels by strain promoted alkyne-azide cycloaddition. Biointerphases 2021; 16:011001. [PMID: 33401918 DOI: 10.1116/6.0000630] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Poly(2-alkyl-2-oxazoline) (PAOx) hydrogels are tailorable synthetic materials with demonstrated biomedical applications, thanks to their excellent biocompatibility and tunable properties. However, their use as injectable hydrogels is challenging as it requires invasive surgical procedures to insert the formed hydrogel into the body due to their nonsoluble 3D network structures. Herein, we introduce cyclooctyne and azide functional side chains to poly(2-oxazoline) copolymers to induce in situ gelation using strain promoted alkyne-azide cycloaddition. The gelation occurs rapidly, within 5 min, under physiological conditions when two polymer solutions are simply mixed. The influence of several parameters, such as temperature and different aqueous solutions, and stoichiometric ratios between the two polymers on the structural properties of the resultant hydrogels have been investigated. The gel formation within tissue samples was verified by subcutaneous injection of the polymer solution into an ex vivo model. The degradation study of the hydrogels in vitro showed that the degradation rate was highly dependent on the type of media, ranging from days to a month. This result opens up the potential uses of PAOx hydrogels in attempts to achieve optimal, injectable drug delivery systems and tissue engineering.
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Affiliation(s)
- Jong-Ryul Park
- Institute of Health and Biomedical Innovation, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Eleonore C L Bolle
- Institute of Health and Biomedical Innovation, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Amanda Dos Santos Cavalcanti
- Institute of Health and Biomedical Innovation, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Annelore Podevyn
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
| | - Joachim F R Van Guyse
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
| | - Aurelien Forget
- Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-St. 31, Freiburg, 79104, Germany
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
| | - Tim R Dargaville
- Institute of Health and Biomedical Innovation, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4001, Australia
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8
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Sui X, Zhang T, Pabarue AB, Fu L, Gutekunst WR. Alternating Cascade Metathesis Polymerization of Enynes and Cyclic Enol Ethers with Active Ruthenium Fischer Carbenes. J Am Chem Soc 2020; 142:12942-12947. [PMID: 32662989 PMCID: PMC7466819 DOI: 10.1021/jacs.0c06045] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Ruthenium alkoxymethylidene complexes have rarely been demonstrated as active species in metathesis reactions and are frequently regarded as inert. Herein, we highlight the ability of these Fischer-type carbenes to participate in cascade alternating ring-opening metathesis polymerization through their efficient alkyne addition reactions. When enyne monomers are combined with low-strain cyclic vinyl ethers, a controlled chain-growth copolymerization occurs that exhibits high degrees of alternation (>90% alternating diads) and produces degradable poly(vinyl ether) materials with low dispersities and targetable molecular weights. This new method is amenable to the synthesis of alternating diblock polymers that can be degraded to small-molecule fragments under aqueous acidic conditions. This work furthers the potential of Fischer-type ruthenium alkylidenes in polymerization strategies and presents new avenues for the generation of functional metathesis materials.
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Affiliation(s)
- Xuelin Sui
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
| | - Tianqi Zhang
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
| | - Alec B Pabarue
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
| | - Liangbing Fu
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
| | - Will R Gutekunst
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
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9
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Miller E, Kim S, Gibson K, Derrick JS, Toste FD. Regio- and Enantioselective Bromocyclization of Difluoroalkenes as a Strategy to Access Tetrasubstituted Difluoromethylene-Containing Stereocenters. J Am Chem Soc 2020; 142:8946-8952. [PMID: 32352775 PMCID: PMC7508160 DOI: 10.1021/jacs.0c02331] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Difluoromethylene-containing compounds have attracted substantial research interest over the past decades for their ability to mimic biological functions of traditional functional groups while providing a wide variety of pharmacological benefits bestowed by the C-F bond. We report a novel strategy to access RCF2Br-containing heterocycles by regio- and enantioselective bromocyclization of difluoroalkenes enabled by chiral anion phase-transfer catalysis. The utility of this methodology was highlighted through a synthesis of an analogue of efavirenz, a drug used for treating HIV. Additionally, the synthetic versatility of the CF2Br intermediates was showcased through functionalization to a variety of enantioenriched α,α-difluoromethylene-containing products.
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Affiliation(s)
- Edward Miller
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Suhong Kim
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Katarina Gibson
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Jeffrey S Derrick
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - F Dean Toste
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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10
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Li G, Zhang X, Zhao W, Zhao W, Li F, Xiao K, Yu Q, Liu S, Zhao Q. Stable and Well-Organized Near-Infrared Platinum(II)-Acetylide-Based Metallacycles-Mediated Cancer Phototherapy. ACS Appl Mater Interfaces 2020; 12:20180-20190. [PMID: 32281784 DOI: 10.1021/acsami.0c01695] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The development of metallacycles with high stability and intense near-infrared (NIR) absorption is important for biomedical applications. However, very few molecular design strategies have been developed on such metallacycles. Herein, we report a new series of stable and well-defined NIR-absorbing metallacycles (M1-M3) through the Pt-acetylide coordination with highly efficient photoconversion performance for cancer phototherapy. The metallacycles showed high stability and strong NIR absorption, and the absorption peaks were red shifted approximately 30 nm in comparison with their corresponding precursors. The introduction of Pt into metallacycles promotes significant photoconversions, including the singlet-to-triplet and nonradiative transitions. Moreover, the fabricated M3 nanoparticles (M3-NPs) showed favorable photoconversions into both thermal effect and singlet oxygen generation upon NIR irradiation, achieving tumor ablation. This novel design of Pt-acetylide metallacycles possesses not only complex topological architectures but also a valuable paradigm for precise cancer phototherapy, which is important for grafting stimuli-responsive functional groups into metallacycles for the development of high-performance biomedical supramolecular materials.
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Affiliation(s)
- Guo Li
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, Jiangsu, P. R. China
| | - Xiangxiang Zhang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, Jiangsu, P. R. China
| | - Weili Zhao
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, Jiangsu, P. R. China
| | - Weiwei Zhao
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, Jiangsu, P. R. China
| | - Feiyang Li
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, Jiangsu, P. R. China
| | - Kang Xiao
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, Jiangsu, P. R. China
| | - Qi Yu
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, Jiangsu, P. R. China
| | - Shujuan Liu
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, Jiangsu, P. R. China
| | - Qiang Zhao
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, Jiangsu, P. R. China
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11
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Acevedo-Jake A, Ball AT, Galli M, Kukwikila M, Denis M, Singleton DG, Tavassoli A, Goldup SM. AT-CuAAC Synthesis of Mechanically Interlocked Oligonucleotides. J Am Chem Soc 2020; 142:5985-5990. [PMID: 32155338 PMCID: PMC8016193 DOI: 10.1021/jacs.0c01670] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Indexed: 12/22/2022]
Abstract
We present a simple strategy for the synthesis of main chain oligonucleotide rotaxanes with precise control over the position of the macrocycle. The novel DNA-based rotaxanes were analyzed to assess the effect of the mechanical bond on their properties.
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Affiliation(s)
- Amanda Acevedo-Jake
- Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, U.K.
| | - Andrew T. Ball
- Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, U.K.
| | - Marzia Galli
- Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, U.K.
| | - Mikiembo Kukwikila
- Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, U.K.
| | - Mathieu Denis
- Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, U.K.
| | - Daniel G. Singleton
- ATDBio
Ltd, School of Chemistry, University of
Southampton, Highfield, Southampton, SO17 1BJ, U.K.
| | - Ali Tavassoli
- Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, U.K.
| | - Stephen M. Goldup
- Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, U.K.
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12
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Heinrich M, Murphy JJ, Ilg MK, Letort A, Flasz JT, Philipps P, Fürstner A. Chagosensine: A Riddle Wrapped in a Mystery Inside an Enigma. J Am Chem Soc 2020; 142:6409-6422. [PMID: 32142305 PMCID: PMC7307910 DOI: 10.1021/jacs.0c01700] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Indexed: 01/02/2023]
Abstract
The marine macrolide chagosensine is supposedly distinguished by a (Z,Z)-configured 1,3-chlorodiene contained within a highly strained 16-membered lactone ring, which also incorporates two trans-2,5-disubstituted tetrahydrofuran (THF) rings; this array is unique. After our initial synthesis campaign had shown that the originally proposed structure is incorrect, the published data set was critically revisited to identify potential mis-assignments. The "northern" THF ring and the anti-configured diol in the "southern" sector both seemed to be sites of concern, thus making it plausible that a panel of eight diastereomeric chagosensine-like compounds would allow the puzzle to be solved. To meet the challenge, the preparation of the required building blocks was optimized, and a convergent strategy for their assembly was developed. A key role was played by the cobalt-catalyzed oxidative cyclization of alken-5-ol derivatives ("Mukaiyama cyclization"), which is shown to be exquisitely chemoselective for terminal alkenes, leaving even terminal alkynes (and other sites of unsaturation) untouched. Likewise, a palladium-catalyzed alkyne alkoxycarbonylation reaction with formation of an α-methylene-γ-lactone proved instrumental, which had not found application in natural product synthesis before. Further enabling steps were a nickel-catalyzed "Tamaru-type" homocrotylation, stereodivergent aldehyde homologations, radical hydroindation, and palladium-catalyzed alkyne-1,2-bis-stannation. The different building blocks were assembled in a serial fashion to give the idiosyncratic chlorodienes by an unprecedented site-selective Stille coupling followed by copper-mediated tin/chlorine exchange. The macrolactones were closed under forcing Yamaguchi conditions, and the resulting products were elaborated into the targeted compound library. Yet, only one of the eight diastereomers turned out to be stable in the solvent mixture that had been used to analyze the natural product; all other isomers were prone to ring opening and/or ring expansion. In addition to this stability issue, our self-consistent data set suggests that chagosensine has almost certainly little to do with the structure originally proposed by the isolation team.
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Affiliation(s)
| | | | - Marina K. Ilg
- Max-Planck-Institut für
Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
| | - Aurélien Letort
- Max-Planck-Institut für
Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
| | - Jakub T. Flasz
- Max-Planck-Institut für
Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
| | - Petra Philipps
- Max-Planck-Institut für
Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
| | - Alois Fürstner
- Max-Planck-Institut für
Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
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13
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Tsao KK, Lee AC, Racine KÉ, Keillor JW. Site-Specific Fluorogenic Protein Labelling Agent for Bioconjugation. Biomolecules 2020; 10:biom10030369. [PMID: 32121143 PMCID: PMC7175205 DOI: 10.3390/biom10030369] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 01/29/2023] Open
Abstract
Many clinically relevant therapeutic agents are formed from the conjugation of small molecules to biomolecules through conjugating linkers. In this study, two novel conjugating linkers were prepared, comprising a central coumarin core, functionalized with a dimaleimide moiety at one end and a terminal alkyne at the other. In our first design, we developed a protein labelling method that site-specifically introduces an alkyne functional group to a dicysteine target peptide tag that was genetically fused to a protein of interest. This method allows for the subsequent attachment of azide-functionalized cargo in the facile synthesis of novel protein-cargo conjugates. However, the fluorogenic aspect of the reaction between the linker and the target peptide was less than we desired. To address this shortcoming, a second linker reagent was prepared. This new design also allowed for the site-specific introduction of an alkyne functional group onto the target peptide, but in a highly fluorogenic and rapid manner. The site-specific addition of an alkyne group to a protein of interest was thus monitored in situ by fluorescence increase, prior to the attachment of azide-functionalized cargo. Finally, we also demonstrated that the cargo can also be attached first, in an azide/alkyne cycloaddition reaction, prior to fluorogenic conjugation with the target peptide-fused protein.
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14
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Alsaeedi MS, Babgi BA, Hussien MA, Abdellattif MH, Humphrey MG. DNA-Binding and Anticancer Activity of Binuclear Gold(I) Alkynyl Complexes with a Phenanthrenyl Bridging Ligand. Molecules 2020; 25:E1033. [PMID: 32106590 PMCID: PMC7179095 DOI: 10.3390/molecules25051033] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/17/2020] [Accepted: 02/21/2020] [Indexed: 12/16/2022] Open
Abstract
3,6-Diethynyl-9,10-diethoxyphenanthrene (4) was synthesized from phenanthrene and employed in the synthesis of the binuclear gold(I) alkynyl complexes (R3P)Au(C≡C-3-[C14H6-9,10-diethoxy]-6-C≡C)Au(PR3) (R = Ph (5a), Cy (5b)). The diyne 4 and complexes 5a and 5b were characterized by NMR spectroscopy, mass spectrometry, and elemental analysis. UV-Vis spectroscopy studies of the metal complexes and precursor diyne show strong p à p* transitions in the near UV region that red shift by ca. 50 nm upon coordination at the gold centers. The emission spectrum of 4 shows an intense fluorescence band centered at 420 nm which red shifts, slightly upon coordination of 4 to gold. Binding studies of 4, 5a, and 5b against calf thymus DNA were carried out, revealing that 4, 5a, and 5b have >40% stronger binding affinities than the commonly used intercalating agent ethidium bromide. The molecular docking scores of 4, 5a, and 5b with B-DNA suggest a similar trend in behavior to that observed in the DNA-binding study. Unlike the ligand 4, promising anticancer properties for 5a and 5b were observed against several cell lines; the DNA binding capability of the precursor alkyne was maintained, and its anticancer efficacy enhanced by the gold centers. Such phenanthrenyl complexes could be promising candidates in certain biological applications because the two components (phenanthrenyl bridge and metal centers) can be altered independently to improve the targeting of the complex, as well as the biological and physicochemical properties.
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Affiliation(s)
- Mona S. Alsaeedi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203 Jeddah 21589, Saudi Arabia; (M.S.A.); (M.A.H.)
- Department of Chemistry, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, Taif 21974, Saudi Arabia;
| | - Bandar A. Babgi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203 Jeddah 21589, Saudi Arabia; (M.S.A.); (M.A.H.)
- Department of Chemistry, College of Science and Arts, King Abdulaziz University, P.O. Box 344 Rabigh 21911, Saudi Arabia
| | - Mostafa A. Hussien
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203 Jeddah 21589, Saudi Arabia; (M.S.A.); (M.A.H.)
| | - Magda H. Abdellattif
- Department of Chemistry, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, Taif 21974, Saudi Arabia;
| | - Mark G. Humphrey
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
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15
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Fiolek TJ, Banahene N, Kavunja HW, Holmes NJ, Rylski AK, Pohane AA, Siegrist MS, Swarts BM. Engineering the Mycomembrane of Live Mycobacteria with an Expanded Set of Trehalose Monomycolate Analogues. Chembiochem 2019; 20:1282-1291. [PMID: 30589191 PMCID: PMC6614877 DOI: 10.1002/cbic.201800687] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Indexed: 01/20/2023]
Abstract
Mycobacteria and related organisms in the Corynebacterineae suborder are characterized by a distinctive outer membrane referred to as the mycomembrane. Biosynthesis of the mycomembrane occurs through an essential process called mycoloylation, which involves antigen 85 (Ag85)-catalyzed transfer of mycolic acids from the mycoloyl donor trehalose monomycolate (TMM) to acceptor carbohydrates and, in some organisms, proteins. We recently described an alkyne-modified TMM analogue (O-AlkTMM-C7) which, in conjunction with click chemistry, acted as a chemical reporter for mycoloylation in intact cells and allowed metabolic labeling of mycoloylated components of the mycomembrane. Here, we describe the synthesis and evaluation of a toolbox of TMM-based reporters bearing alkyne, azide, trans-cyclooctene, and fluorescent tags. These compounds gave further insight into the substrate tolerance of mycoloyltransferases (e.g., Ag85s) in a cellular context and they provide significantly expanded experimental versatility by allowing one- or two-step cell labeling, live cell labeling, and rapid cell labeling via tetrazine ligation. Such capabilities will facilitate research on mycomembrane composition, biosynthesis, and dynamics. Moreover, because TMM is exclusively metabolized by Corynebacterineae, the described probes may be valuable for the specific detection and cell-surface engineering of Mycobacterium tuberculosis and related pathogens. We also performed experiments to establish the dependence of probe incorporation on mycoloyltransferase activity, results from which suggested that cellular labeling is a function not only of metabolic incorporation (and likely removal) pathway(s), but also accessibility across the envelope. Thus, whole-cell labeling experiments with TMM reporters should be carefully designed and interpreted when envelope permeability may be compromised. On the other hand, this property of TMM reporters can potentially be exploited as a convenient way to probe changes in envelope integrity and permeability, facilitating drug development studies.
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Affiliation(s)
- Taylor J Fiolek
- Department of Chemistry and Biochemistry, Central Michigan University, 1200 S. Franklin St., Mount Pleasant, MI, 48859, USA
| | - Nicholas Banahene
- Department of Chemistry and Biochemistry, Central Michigan University, 1200 S. Franklin St., Mount Pleasant, MI, 48859, USA
| | - Herbert W Kavunja
- Department of Chemistry and Biochemistry, Central Michigan University, 1200 S. Franklin St., Mount Pleasant, MI, 48859, USA
| | - Nathan J Holmes
- Department of Chemistry and Biochemistry, Central Michigan University, 1200 S. Franklin St., Mount Pleasant, MI, 48859, USA
| | - Adrian K Rylski
- Department of Chemistry and Biochemistry, Central Michigan University, 1200 S. Franklin St., Mount Pleasant, MI, 48859, USA
| | - Amol Arunrao Pohane
- Department of Microbiology, University of Massachusetts, 639 N. Pleasant Street, Amherst, MA, 01003, USA
| | - M Sloan Siegrist
- Department of Microbiology, University of Massachusetts, 639 N. Pleasant Street, Amherst, MA, 01003, USA
| | - Benjamin M Swarts
- Department of Chemistry and Biochemistry, Central Michigan University, 1200 S. Franklin St., Mount Pleasant, MI, 48859, USA
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16
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Mo JN, Su J, Zhao J. The Asymmetric A³(Aldehyde⁻Alkyne⁻Amine) Coupling: Highly Enantioselective Access to Propargylamines. Molecules 2019; 24:molecules24071216. [PMID: 30925732 PMCID: PMC6480255 DOI: 10.3390/molecules24071216] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/22/2019] [Accepted: 03/27/2019] [Indexed: 11/16/2022] Open
Abstract
The recent developments in asymmetric A³ (aldehyde⁻alkyne⁻amine) coupling has been summarized in this review. Several interesting modifications of the ligands enabled the highly enantioselective synthesis of chiral propargylamines, which are further used in the construction of nitrogen-containing chiral building blocks.
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Affiliation(s)
- Jia-Nan Mo
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, China.
| | - Junqi Su
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, China.
| | - Jiannan Zhao
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, China.
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17
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Abstract
Heteroatom-substituted alkynes have attracted a significant amount of interest in the synthetic community due to the polarized nature of these alkynes and their utility in a wide range of reactions. One specific class of heteroatom-substituted alkynes combines this utility with the presence of an azole moiety. These N-alkynyl azoles have been known for nearly 50 years, but recently there has been a tremendous increase in the number of reports detailing the synthesis and utility of this class of compound. While much of the chemistry of N-alkynyl azoles mirrors that of the more extensively studied N-alkynyl amides (ynamides), there are notable exceptions. In addition, as azoles are extremely common in natural products and pharmaceuticals, these N-alkynyl azoles have high potential for accessing biologically important compounds. In this review, the literature reports of N-alkynyl azole synthesis, reactions, and uses have been assembled. Collectively, these reports demonstrate the growth in this area and the promise of exploiting N-alkynyl azoles in synthesis.
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Affiliation(s)
- Brandon Reinus
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA.
| | - Sean M Kerwin
- Department of Chemistry & Biochemistry, Texas State University, San Marcos, TX 78666, USA.
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18
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Abstract
Stimulated Raman Scattering (SRS) coupled with alkyne tags has been an emerging imaging technique to visualize small-molecule species with high sensitivity and specificity. Here we describe the development of a ratiometric Raman probe for visualizing hydrogen sulfide (H2S) species in living cells as the first alkyne-based sensor for SRS microscopy. This probe uses an azide unit as a selective reactive site, and it targets mitochondria with high specificity. The SRS ratiometric images show a strong response to H2S level changes in living cells.
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Affiliation(s)
- Chen Zeng
- Department of chemistry, Columbia University, 3000 Broadway, New York, NY 10027, USA.
| | - Fanghao Hu
- Department of chemistry, Columbia University, 3000 Broadway, New York, NY 10027, USA.
| | - Rong Long
- Department of chemistry, Columbia University, 3000 Broadway, New York, NY 10027, USA.
| | - Wei Min
- Department of chemistry, Columbia University, 3000 Broadway, New York, NY 10027, USA.
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19
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Voronin VV, Ledovskaya MS, Bogachenkov AS, Rodygin KS, Ananikov VP. Acetylene in Organic Synthesis: Recent Progress and New Uses. Molecules 2018; 23:E2442. [PMID: 30250005 PMCID: PMC6222752 DOI: 10.3390/molecules23102442] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 09/14/2018] [Accepted: 09/17/2018] [Indexed: 11/16/2022] Open
Abstract
Recent progress in the leading synthetic applications of acetylene is discussed from the prospect of rapid development and novel opportunities. A diversity of reactions involving the acetylene molecule to carry out vinylation processes, cross-coupling reactions, synthesis of substituted alkynes, preparation of heterocycles and the construction of a number of functionalized molecules with different levels of molecular complexity were recently studied. Of particular importance is the utilization of acetylene in the synthesis of pharmaceutical substances and drugs. The increasing interest in acetylene and its involvement in organic transformations highlights a fascinating renaissance of this simplest alkyne molecule.
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Affiliation(s)
- Vladimir V Voronin
- Institute of Chemistry, Saint Petersburg State University, Universitetsky prospect 26, Peterhof 198504, Russia.
| | - Maria S Ledovskaya
- Institute of Chemistry, Saint Petersburg State University, Universitetsky prospect 26, Peterhof 198504, Russia.
| | - Alexander S Bogachenkov
- Institute of Chemistry, Saint Petersburg State University, Universitetsky prospect 26, Peterhof 198504, Russia.
| | - Konstantin S Rodygin
- Institute of Chemistry, Saint Petersburg State University, Universitetsky prospect 26, Peterhof 198504, Russia.
| | - Valentine P Ananikov
- Institute of Chemistry, Saint Petersburg State University, Universitetsky prospect 26, Peterhof 198504, Russia.
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky prospect 47, Moscow 119991, Russia.
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20
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Zhang J, Yan S, He Z, Ding C, Zhai T, Chen Y, Li H, Yang G, Zhou X, Wang P. Small Unnatural Amino Acid Carried Raman Tag for Molecular Imaging of Genetically Targeted Proteins. J Phys Chem Lett 2018; 9:4679-4685. [PMID: 30067370 DOI: 10.1021/acs.jpclett.8b01991] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Raman has been implemented to image biological systems for decades. However, Raman microscopy along with Raman probes is restricted to image metabolites or a few intracellular organelles so far and lacks genetic specificity for imaging proteins of interest, which significantly hinders their application. Here, we report the Raman spectra-based protein imaging method, which incorporates a small phenyl ring enhanced Raman tag (total of ∼0.55 kDa) with a single unnatural amino acid (UAA) to genetically label specific proteins. We further demonstrate hyperspectral stimulated Raman scattering (SRS) imaging of the Histone3.3 protein in the nucleus, Sec61β protein in the endoplasmic reticulum of HeLa cells, and Huntingtin protein Htt74Q in mutant huntingtin-induced cells. Genetic encoding of a small, stable, sensitive, and narrow-band Raman tag took one key step forward to enable SRS or Raman imaging of specific proteins and could further facilitate quantitative Raman spectra-based supermultiplexing microscopy in the future.
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Affiliation(s)
- Jing Zhang
- Britton Chance Center for Biomedical Photonics , Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
| | - Shuai Yan
- Britton Chance Center for Biomedical Photonics , Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
| | - Zhiyong He
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers of the Ministry of Education , Wuhan University , Wuhan , Hubei 430072 , China
| | - Cong Ding
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers of the Ministry of Education , Wuhan University , Wuhan , Hubei 430072 , China
| | - Tianxing Zhai
- Britton Chance Center for Biomedical Photonics , Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
| | - Yage Chen
- Britton Chance Center for Biomedical Photonics , Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
| | - Haozheng Li
- Britton Chance Center for Biomedical Photonics , Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
| | - Guang Yang
- Britton Chance Center for Biomedical Photonics , Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
| | - Xiang Zhou
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers of the Ministry of Education , Wuhan University , Wuhan , Hubei 430072 , China
| | - Ping Wang
- Britton Chance Center for Biomedical Photonics , Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
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21
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Nishimoto Y, Yi J, Takata T, Baba A, Yasuda M. Regio- and Stereoselective Allylindation of Alkynes Using InBr₃ and Allylic Silanes: Synthesis, Characterization, and Application of 1,4-Dienylindiums toward Skipped Dienes. Molecules 2018; 23:E1884. [PMID: 30060532 PMCID: PMC6222668 DOI: 10.3390/molecules23081884] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 07/26/2018] [Accepted: 07/27/2018] [Indexed: 11/28/2022] Open
Abstract
Regioselective anti-allylindation of alkynes was achieved using InBr₃ and allylic silanes. Various types of alkynes and allylic silanes were applicable to the present allylindation. This sequential process used the generated 1,4-dienylindiums to establish novel synthetic methods for skipped dienes. The 1,4-dienylindiums were characterized by spectral analysis and treated with I₂ to stereoselectively give 1-iodo-1,4-dienes. The Pd-catalyzed cross coupling of 1,4-dienylindium with iodobenzene successfully proceeded in a one-pot manner to afford the corresponding 1-aryl-1,4-diene.
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Affiliation(s)
- Yoshihiro Nishimoto
- Frontier Research Base for Global Young Researchers Center for Open Innovation Research and Education (COiRE), Graduate School of Engineering, Osaka University; Osaka 565-0871, Japan.
| | - Junyi Yi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University; Osaka 565-0871, Japan.
| | - Tatsuaki Takata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University; Osaka 565-0871, Japan.
| | - Akio Baba
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University; Osaka 565-0871, Japan.
| | - Makoto Yasuda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University; Osaka 565-0871, Japan.
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22
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Yang L, Kim HB, Sul JY, Yeldell SB, Eberwine JH, Dmochowski IJ. Efficient Synthesis of Light-Triggered Circular Antisense Oligonucleotides Targeting Cellular Protein Expression. Chembiochem 2018; 19:1250-1254. [PMID: 29479781 PMCID: PMC6248878 DOI: 10.1002/cbic.201800012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Indexed: 02/06/2023]
Abstract
Light-activated ("caged") antisense oligonucleotides are powerful molecules for regulating gene expression at submicron spatial resolution through the focal modulation of endogenous cellular processes. Cyclized caged oligos are particularly promising structures because of their inherent stability and similarity to naturally occurring circular DNA and RNA molecules. Here, we introduce an efficient route for cyclizing an antisense oligodeoxynucleotide incorporating a photocleavable linker. Oligo cyclization was achieved for several sequences in nearly quantitative yields through intramolecular copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC). Caging stability and light activation were characterized by FRET efficiency, denaturing gel assay, and melting temperature measurements. Finally, a cyclized caged oligo was designed to target gfap, and it gave a tenfold reduction in glial fibrillary acidic protein upon photoactivation in astrocytes.
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Affiliation(s)
- Linlin Yang
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Hyun Bum Kim
- Department of Pharmacology, University of Pennsylvania, 38 John Morgan Building, 3620 Hamilton Walk, Philadelphia, PA, 19104-6084, USA
| | - Jai-Yoon Sul
- Department of Pharmacology, University of Pennsylvania, 38 John Morgan Building, 3620 Hamilton Walk, Philadelphia, PA, 19104-6084, USA
| | - Sean B Yeldell
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104-6323, USA
| | - James H Eberwine
- Department of Pharmacology, University of Pennsylvania, 38 John Morgan Building, 3620 Hamilton Walk, Philadelphia, PA, 19104-6084, USA
| | - Ivan J Dmochowski
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104-6323, USA
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23
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Abstract
Peptide macrocycles are widely utilized in the development of high affinity ligands, including stapled α-helices. The linear rigidity of a 1,3-diynyl linkage provides an optimal distance (7 Å) between β-carbons of the i,i+4 amino acid side chains, thus suggesting its utility in stabilizing α-helical structures. Here, we report the development of an on-resin strategy for an intramolecular Glaser reaction between two alkyne-terminated side chains by using copper chloride, an essential bpy-diol ligand, and diisopropylethylamine at room temperature. The efficiency of this ligation was illustrated by the synthesis of (i,i+4)-, (i,i+5)-, (i,i+6)-, and (i,i+7)-stapled BCL-9 α-helical peptides using the unnatural amino acid propargyl serine. Overall, this procedurally simple method relies on inexpensive and widely available reagents to generate low molecular weight 23-, 26-, 29-, and 32-membered peptide macrocycles.
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Affiliation(s)
- Philip A. Cistrone
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037 (United States),
| | - Anthony P. Silvestri
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037 (United States),
| | - Jordi C. J. Hintzen
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037 (United States),
| | - Philip E. Dawson
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037 (United States),
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24
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Bacsa I, Konc C, Orosz AB, Kecskeméti G, Rigó R, Özvegy-Laczka C, Mernyák E. Synthesis of Novel C-2- or C-15-Labeled BODIPY-Estrone Conjugates. Molecules 2018; 23:E821. [PMID: 29614041 PMCID: PMC6017578 DOI: 10.3390/molecules23040821] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 03/29/2018] [Accepted: 04/02/2018] [Indexed: 11/16/2022] Open
Abstract
Novel BODIPY-estrone conjugates were synthesized via Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC). Estrone-alkynes or an estrone-azide as starting compounds were synthesized via Michael addition or Sonogashira reaction as key steps. Fluorescent dyes based on BODIPY-core were provided by azide or alkyne functional groups. Fluorescent labeling of estrone was efficiently achieved at the C-2 or C-15 position. The newly-elaborated coupling procedures might have a broad applicability in the synthesis of fluorescent-labeled estrone conjugates suitable for biological assays.
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Affiliation(s)
- Ildikó Bacsa
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary.
| | - Csilla Konc
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary.
| | - Anna Boglárka Orosz
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary.
| | - Gábor Kecskeméti
- Department of Medicinal Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary.
| | - Réka Rigó
- Membrane protein research group, Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary.
| | - Csilla Özvegy-Laczka
- Membrane protein research group, Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary.
| | - Erzsébet Mernyák
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary.
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25
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Gilbertson SR, Chen YC, Soto CA, Yang Y, Rice KC, Cunningham KA, Anastasio NC. Synthesis and activity of functionalizable derivatives of the serotonin (5-HT) 5-HT 2A receptor (5-HT 2AR) antagonist M100907. Bioorg Med Chem Lett 2018; 28:1381-1385. [PMID: 29555153 DOI: 10.1016/j.bmcl.2018.02.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Accepted: 02/28/2018] [Indexed: 01/19/2023]
Abstract
The approach of tethering together two known receptor ligands, to be used as molecular probes for the study of G protein-coupled receptor (GPCR) systems, has proven to be a valuable approach. Selective ligands that possess functionality that can be used to link to other ligands, are useful in the development of novel antagonists and agonists. Such molecules can also be attached to reporter molecules, such as fluorophores, for the study of GPCR dimerization and its role in signaling. The highly selective serotonin (5-HT) 5-HT2A receptor (5-HT2AR) antagonist M100907 (volinanserin) is of clinical interest in the treatment of neurological and mental health disorders. Here, we synthesized the most active (+)-M100907 enantiomer as well as a series of derivatives that possessed either an alkyne or an azide. The triazole resulting from the dipolar cycloaddition of these groups did not interfere with the ability of the bivalent ligand to act as an antagonist. Thus, we have synthesized a number of compounds which will prove useful in elucidating the role of the 5-HT2AR in the central nervous system.
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Affiliation(s)
- Scott R Gilbertson
- Department of Chemistry, University of Houston, Houston, TX, United States; Center for Addiction Research, United States.
| | - Ying-Chu Chen
- Department of Chemistry, University of Houston, Houston, TX, United States
| | | | - Yaxing Yang
- Department of Chemistry, University of Houston, Houston, TX, United States
| | - Kenner C Rice
- Drug Design and Synthesis Section, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse, Bethesda, MD, United States
| | - Kathryn A Cunningham
- Center for Addiction Research, United States; Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX, United States
| | - Noelle C Anastasio
- Center for Addiction Research, United States; Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX, United States
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26
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Guttenplan APM, Young LJ, Matak-Vinkovic D, Kaminski CF, Knowles TPJ, Itzhaki LS. Nanoscale click-reactive scaffolds from peptide self-assembly. J Nanobiotechnology 2017; 15:70. [PMID: 28985740 PMCID: PMC6389178 DOI: 10.1186/s12951-017-0300-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 09/23/2017] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Due to their natural tendency to self-assemble, proteins and peptides are important components for organic nanotechnology. One particular class of peptides of recent interest is those that form amyloid fibrils, as this self-assembly results in extremely strong, stable quasi-one-dimensional structures which can be used to organise a wide range of cargo species including proteins and oligonucleotides. However, assembly of peptides already conjugated to proteins is limited to cargo species that do not interfere sterically with the assembly process or misfold under the harsh conditions often used for assembly. Therefore, a general method is needed to conjugate proteins and other molecules to amyloid fibrils after the fibrils have self-assembled. RESULTS Here we have designed an amyloidogenic peptide based on the TTR105-115 fragment of transthyretin to form fibrils that display an alkyne functionality, important for bioorthogonal chemical reactions, on their surface. The fibrils were formed and reacted both with an azide-containing amino acid and with an azide-functionalised dye by the Huisgen cycloaddition, one of the class of "click" reactions. Mass spectrometry and total internal reflection fluorescence optical microscopy were used to show that peptides incorporated into the fibrils reacted with the azide while maintaining the structure of the fibril. These click-functionalised amyloid fibrils have a variety of potential uses in materials and as scaffolds for bionanotechnology. DISCUSSION Although previous studies have produced peptides that can both form amyloid fibrils and undergo "click"-type reactions, this is the first example of amyloid fibrils that can undergo such a reaction after they have been formed. Our approach has the advantage that self-assembly takes place before click functionalization rather than pre-functionalised building blocks self-assembling. Therefore, the molecules used to functionalise the fibril do not themselves have to be exposed to harsh, amyloid-forming conditions. This means that a wider range of proteins can be used as ligands in this process. For instance, the fibrils can be functionalised with a green fluorescent protein that retains its fluorescence after it is attached to the fibrils, whereas this protein loses its fluorescence if it is exposed to the conditions used for aggregation.
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Affiliation(s)
- Alexander P. M. Guttenplan
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1PD UK
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW UK
| | - Laurence J. Young
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge, CB3 0AS UK
| | - Dijana Matak-Vinkovic
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW UK
| | - Clemens F. Kaminski
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge, CB3 0AS UK
| | - Tuomas P. J. Knowles
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW UK
| | - Laura S. Itzhaki
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1PD UK
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27
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Niemeyer ZL, Pindi S, Khrakovsky DA, Kuzniewski CN, Hong CM, Joyce LA, Sigman MS, Toste FD. Parameterization of Acyclic Diaminocarbene Ligands Applied to a Gold(I)-Catalyzed Enantioselective Tandem Rearrangement/Cyclization. J Am Chem Soc 2017; 139:12943-12946. [PMID: 28885017 PMCID: PMC5903265 DOI: 10.1021/jacs.7b08791] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Computed descriptors for acyclic diaminocarbene ligands are developed in the context of a gold catalyzed enantioselective tandem [3,3]-sigmatropic rearrangement-[2+2]-cyclization. Surrogate structures enable the rapid identification of parameters that reveal mechanistic characteristics. The observed selectivity trends are validated in a robust multivariate analysis facilitating the development of a highly enantioselective process.
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Affiliation(s)
- Zachary L. Niemeyer
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Suresh Pindi
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Dimitri A. Khrakovsky
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Christian N. Kuzniewski
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Cynthia M. Hong
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Leo A. Joyce
- MRL, Department of Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Matthew S. Sigman
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - F. Dean Toste
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
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28
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Abstract
SNO-OCTs are eight-membered heterocyclic alkynes that have fast rates of reactivity with 1,3-dipoles. In contrast to many other reported cycloalkynes, SNO-OCTs contain multiple sites for derivatization, display stability under a variety of common reaction conditions, and offer the opportunity for strain-induced ring-opening following the initial reaction of the alkyne moiety. In this paper, we describe how the unique features of SNO-OCTs can be employed to modify an oxime-bearing styrene copolymer and introduce an array of polar functionalities into the polymer. This can be achieved through both the addition of SNO-OCT to the polymer, as well as in the subsequent opening of the sulfamate ring once it has been installed in the polymer.
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Affiliation(s)
- Eileen G Burke
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Jennifer M Schomaker
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
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29
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Liu T, Qiao JX, Poss MA, Yu JQ. Palladium(II)-Catalyzed Site-Selective C(sp 3 )-H Alkynylation of Oligopeptides: A Linchpin Approach for Oligopeptide-Drug Conjugation. Angew Chem Int Ed Engl 2017; 56:10924-10927. [PMID: 28714148 PMCID: PMC5572133 DOI: 10.1002/anie.201706367] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Indexed: 01/09/2023]
Abstract
The palladium(II)-catalyzed C(sp3 )-H alkynylation of oligopeptides was developed with tetrabutylammonium acetate as a key additive. Through molecular design, the acetylene motif served as a linchpin to introduce a broad range of carbonyl-containing pharmacophores onto oligopeptides, thus providing a chemical tool for the synthesis and modification of novel oligopeptide-pharmacophore conjugates by C-H functionalization. Dipeptide conjugates with coprostanol and estradiol were synthesized by this method for potential application in targeted drug delivery to tumor cells with overexpressed nuclear hormone receptors.
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Affiliation(s)
- Tao Liu
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Jennifer X Qiao
- Department of Discovery Chemistry, Bristol-Myers Squibb, P.O. Box 5400, Princeton, NJ, 08543, USA
| | - Michael A Poss
- Department of Discovery Chemistry, Bristol-Myers Squibb, P.O. Box 5400, Princeton, NJ, 08543, USA
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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30
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Silvestri AP, Cistrone PA, Dawson PE. Adapting the Glaser Reaction for Bioconjugation: Robust Access to Structurally Simple, Rigid Linkers. Angew Chem Int Ed Engl 2017; 56:10438-10442. [PMID: 28685936 PMCID: PMC5708120 DOI: 10.1002/anie.201705065] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Indexed: 12/26/2022]
Abstract
Copper-mediated coupling between alkynes to generate a structurally rigid, linear 1,3-diyne linkage has been known for over a century. However, the mechanistic requirement to simultaneously maintain CuI and an oxidant has limited its practical utility, especially for complex functional molecules in aqueous solution. We find that addition of a specific bpy-diol ligand protects unprotected peptides from CuII -mediated oxidative damage through the formation of an insoluble CuII gel which solves the critical challenge of applying Glaser coupling to substrates that are degraded by CuII . The generality of this method is illustrated through the conjugation of a series of polar and nonpolar labels onto a fully unprotected GLP-1R agonist through a linear 7 Å diynyl linker.
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Affiliation(s)
- Anthony P Silvestri
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Philip A Cistrone
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Philip E Dawson
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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31
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Hosseyni S, Smith CA, Shi X. Gold-Catalyzed Vinyl Ether Hydroalkynylation: An Alternative Pathway for the Gold-Catalyzed Intermolecular Reaction of Alkenes and Alkynes. Org Lett 2016; 18:6336-6339. [PMID: 27978688 PMCID: PMC6430632 DOI: 10.1021/acs.orglett.6b03228] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In this report, the gold-catalyzed intermolecular reaction of vinyl ethers and terminal alkynes is investigated. Utilizing a triazole gold catalyst lessens gold decomposition in the presence of the vinyl ether and affords an alkynylation product instead of the [2 + 2] product. This protocol has been expanded to include glycal substrates, which undergo a one-pot alkynylation-Ferrier reaction to produce functionalized sugars in moderate to excellent yields with high diastereoselectivity.
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Affiliation(s)
- Seyedmorteza Hosseyni
- The Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Courtney A. Smith
- The Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Xiaodong Shi
- The Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
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32
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Clavadetscher J, Hoffmann S, Lilienkampf A, Mackay L, Yusop RM, Rider SA, Mullins JJ, Bradley M. Copper Catalysis in Living Systems and In Situ Drug Synthesis. Angew Chem Int Ed Engl 2016; 55:15662-15666. [PMID: 27860120 DOI: 10.1002/anie.201609837] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 10/20/2016] [Indexed: 01/23/2023]
Abstract
The copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction has proven to be a pivotal advance in chemical ligation strategies with applications ranging from polymer fabrication to bioconjugation. However, application in vivo has been limited by the inherent toxicity of the copper catalyst. Herein, we report the application of heterogeneous copper catalysts in azide-alkyne cycloaddition processes in biological systems ranging from cells to zebrafish, with reactions spanning from fluorophore activation to the first reported in situ generation of a triazole-containing anticancer agent from two benign components, opening up many new avenues of exploration for CuAAC chemistry.
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Affiliation(s)
- Jessica Clavadetscher
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ, Edinburgh, UK
| | - Scott Hoffmann
- University of Edinburgh/BHF Centre for Cardiovascular Science, Queen's Medical Research Institute, 47 Little France Crescent, EH16 4TJ, Edinburgh, UK
| | - Annamaria Lilienkampf
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ, Edinburgh, UK
| | - Logan Mackay
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ, Edinburgh, UK
| | - Rahimi M Yusop
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Sebastien A Rider
- University of Edinburgh/BHF Centre for Cardiovascular Science, Queen's Medical Research Institute, 47 Little France Crescent, EH16 4TJ, Edinburgh, UK
| | - John J Mullins
- University of Edinburgh/BHF Centre for Cardiovascular Science, Queen's Medical Research Institute, 47 Little France Crescent, EH16 4TJ, Edinburgh, UK
| | - Mark Bradley
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ, Edinburgh, UK
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33
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Maeda K, Maruta M, Sakai Y, Ikai T, Kanoh S. Synthesis of Optically Active Poly(diphenylacetylene)s Using Polymer Reactions and an Evaluation of Their Chiral Recognition Abilities as Chiral Stationary Phases for HPLC. Molecules 2016; 21:E1487. [PMID: 27827999 PMCID: PMC6273228 DOI: 10.3390/molecules21111487] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 12/03/2022] Open
Abstract
A series of optically active poly(diphenylacetylene) derivatives bearing a chiral substituent (poly-2S) or chiral and achiral substituents (poly-(2Sx-co-31-x)) on all of their pendant phenyl rings were synthesized by the reaction of poly(bis(4-carboxyphenyl)acetylene) with (S)-1-phenylethylamine ((S)-2) or benzylamine (3) in the presence of a condensing reagent. Their chiroptical properties and chiral recognition abilities as chiral stationary phases (CSPs) for high-performance liquid chromatography (HPLC) were investigated. Poly-2S and poly-(2Sx-co-31-x) (0.06 < x < 0.71) formed a preferred-handed helical conformation with opposite helical senses after thermal annealing despite possessing the same chiral pendant (h-poly-2S and h-poly-(2Sx-co-31-x)). Furthermore, h-poly-2S and h-poly-(2S0.36-co-30.64) emitted circularly polarized luminescence with opposite signs. h-Poly-2S showed higher chiral recognition abilities toward a larger number of racemates than poly-2S without a preferred-handed helicity and the previously reported preferred-handed poly(diphenylacetylene) derivative bearing the same chiral substituent on half of its pendant phenyl rings. h-Poly-(2S0.36-co-30.64) also exhibited good chiral recognition abilities toward several racemates, though the elution order of some enantiomers was reversed compared with h-poly-2S.
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Affiliation(s)
- Katsuhiro Maeda
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
| | - Miyuki Maruta
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
| | - Yuki Sakai
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
| | - Tomoyuki Ikai
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
| | - Shigeyoshi Kanoh
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
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34
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Abstract
Silylaryl bromides and iodides can be prepared in one step from commercially available starting materials. Arynes can be generated from these compounds under conditions nearly identical to those employed for silylaryl triflates. Three distinct transformations, ortho-arylation of N-tritylanilines, intermolecular addition of arynes to amides, and reaction of ureas with arynes, were shown to be successful for the new aryne precursors. The main advantage of silylaryl halides relative to silyl aryl triflates is their one-step preparation from commercially available starting materials.
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Affiliation(s)
- Milad Mesgar
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| | - Olafs Daugulis
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
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Guo M, Chen B, Lv M, Zhou X, Wen Y, Shen X. The Homocoupling Reaction of Aromatic Terminal Alkynes by a Highly Active Palladium(II)/AgNO₃ Cocatalyst in Aqueous Media Under Aerobic Conditions. Molecules 2016; 21:molecules21050606. [PMID: 27171071 PMCID: PMC6274053 DOI: 10.3390/molecules21050606] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 05/03/2016] [Accepted: 05/03/2016] [Indexed: 12/05/2022] Open
Abstract
A new and efficient Pd(II)/AgNO3-cocatalyzed homocoupling of aromatic terminal alkynes is described. Various symmetrical 1,4-disubstituted-1,3-diynes are obtained in good to excellent yields. This protocol employs a loading with relatively low palladium(II) in aqueous media under aerobic conditions.
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Affiliation(s)
- Mengping Guo
- Institue of Coordination Catalysis, College of Chemistry and Bio-Engineering, Yichun University, Yichun 336000, China.
- Engineering Center of Jiangxi University for Lithium Energy, Yichun University, Yichun 336000, China.
| | - Bo Chen
- Institue of Coordination Catalysis, College of Chemistry and Bio-Engineering, Yichun University, Yichun 336000, China.
- Engineering Center of Jiangxi University for Lithium Energy, Yichun University, Yichun 336000, China.
| | - Meiyun Lv
- Institue of Coordination Catalysis, College of Chemistry and Bio-Engineering, Yichun University, Yichun 336000, China.
| | - Xiuling Zhou
- Institue of Coordination Catalysis, College of Chemistry and Bio-Engineering, Yichun University, Yichun 336000, China.
| | - Yongju Wen
- Institue of Coordination Catalysis, College of Chemistry and Bio-Engineering, Yichun University, Yichun 336000, China.
| | - Xiuli Shen
- Institue of Coordination Catalysis, College of Chemistry and Bio-Engineering, Yichun University, Yichun 336000, China.
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Zhou T, Tao Y, Jin H, Song B, Jing T, Luo D, Zhou Y, Zhou Y, Lee YI, Mei S. Fabrication of a Selective and Sensitive Sensor Based on Molecularly Imprinted Polymer/Acetylene Black for the Determination of Azithromycin in Pharmaceuticals and Biological Samples. PLoS One 2016; 11:e0147002. [PMID: 26820753 PMCID: PMC4731201 DOI: 10.1371/journal.pone.0147002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Accepted: 12/25/2015] [Indexed: 01/04/2023] Open
Abstract
A new selective and sensitive sensor based on molecularly imprinted polymer/acetylene black (MIP/AB) was developed for the determination of azithromycin (AZM) in pharmaceuticals and biological samples. The MIP of AZM was synthesized by precipitation polymerization. MIP and AB were then respectively introduced as selective and sensitive elements for the preparation of MIP/AB-modified carbon paste (MIP/ABP) electrode. The performance of the obtained sensor was estimated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques. Compared with non-molecularly imprinted polymer (NIP) electrodes, NIP/ABP electrodes, and MIP-modified carbon paste electrodes, MIP/ABP electrode exhibited excellent current response toward AZM. The prepared sensor also exhibited good selectivity for AZM in comparison with structurally similar compounds. The effect of electrode composition, extraction parameters, and electrolyte conditions on the current response of the sensor was investigated. Under the optimized conditions, the prepared sensor showed two dynamic linear ranges of 1.0 × 10−7 mol L−1 to 2.0 × 10−6 mol L−1 and 2.0 × 10−6 mol L−1 to 2.0 × 10−5 mol L−1, with a limit of detection of 1.1 × 10−8 mol L−1. These predominant properties ensured that the sensor exhibits excellent reliability for detecting AZM in pharmaceuticals and biological fluids without the assistance of any separation techniques. The results were validated by the high-performance liquid chromatography–tandem mass spectrometry method.
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Affiliation(s)
- Tingting Zhou
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, 430030, China
| | - Yun Tao
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, 430030, China
| | - Hua Jin
- Department of Chemistry, Changwon National University, Changwon, 641–773, Republic of Korea
- Central Laboratory, Yanbian University Hospital, Yanji, Jilin, 133000, China
| | - Bin Song
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, 430030, China
| | - Tao Jing
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, 430030, China
| | - Dan Luo
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, 430030, China
| | - Yusun Zhou
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, 430030, China
| | - Yikai Zhou
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, 430030, China
| | - Yong-Ill Lee
- Department of Chemistry, Changwon National University, Changwon, 641–773, Republic of Korea
| | - Surong Mei
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, 430030, China
- * E-mail:
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Liu F, Zhong J, Li S, Li M, Wu L, Wang Q, Mao J, Liu S, Zheng B, Wang M, Bian Q. Total Syntheses of (R)-Strongylodiols C and D. J Nat Prod 2016; 79:244-247. [PMID: 26735019 DOI: 10.1021/acs.jnatprod.5b00713] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The first total syntheses of two marine natural products, (R)-strongylodiols C and D, with 99% ee were achieved. The key steps of the strategy include the zipper reaction of an alkyne, the asymmetric alkynylation of an unsaturated aliphatic aldehyde catalyzed with Trost's ProPhenol ligand, and the Cadiot-Chodkiewicz cross-coupling reaction of a chiral propargylic alcohol with a bromoalkyne.
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Affiliation(s)
- Feipeng Liu
- Department of Applied Chemistry, China Agricultural University , 2 West Yuanmingyuan Road, Beijing 100193, People's Republic of China
| | - Jiangchun Zhong
- Department of Applied Chemistry, China Agricultural University , 2 West Yuanmingyuan Road, Beijing 100193, People's Republic of China
| | - Shuoning Li
- Department of Applied Chemistry, China Agricultural University , 2 West Yuanmingyuan Road, Beijing 100193, People's Republic of China
| | - Minyan Li
- Department of Applied Chemistry, China Agricultural University , 2 West Yuanmingyuan Road, Beijing 100193, People's Republic of China
| | - Lin Wu
- Department of Applied Chemistry, China Agricultural University , 2 West Yuanmingyuan Road, Beijing 100193, People's Republic of China
| | - Qian Wang
- Department of Applied Chemistry, China Agricultural University , 2 West Yuanmingyuan Road, Beijing 100193, People's Republic of China
| | - Jianyou Mao
- Department of Applied Chemistry, China Agricultural University , 2 West Yuanmingyuan Road, Beijing 100193, People's Republic of China
| | - Shikuo Liu
- Department of Applied Chemistry, China Agricultural University , 2 West Yuanmingyuan Road, Beijing 100193, People's Republic of China
| | - Bing Zheng
- Department of Applied Chemistry, China Agricultural University , 2 West Yuanmingyuan Road, Beijing 100193, People's Republic of China
| | - Min Wang
- Department of Applied Chemistry, China Agricultural University , 2 West Yuanmingyuan Road, Beijing 100193, People's Republic of China
| | - Qinghua Bian
- Department of Applied Chemistry, China Agricultural University , 2 West Yuanmingyuan Road, Beijing 100193, People's Republic of China
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Abstract
A Rh-catalyzed controlled decarbonylation of alkynyl α-diones is described. By using different ligand and solvent combinations, mono- and double-decarbonylation can be selectively achieved to give conjugated ynones and disubstituted alkynes, respectively. A fundamental study on catalytic activation of unstrained C-C bonds under nonoxidative conditions is presented.
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Affiliation(s)
- Rachel E. Whittaker
- The University of Texas at Austin, Department of Chemistry, 101 E 24 St, A5300, Austin, TX 78712, United States
| | - Guangbin Dong
- The University of Texas at Austin, Department of Chemistry, 101 E 24 St, A5300, Austin, TX 78712, United States
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Mei KC, Rubio N, Costa PM, Kafa H, Abbate V, Festy F, Bansal SS, Hider RC, Al-Jamal KT. Synthesis of double-clickable functionalised graphene oxide for biological applications. Chem Commun (Camb) 2015; 51:14981-4. [PMID: 26295072 PMCID: PMC4594119 DOI: 10.1039/c5cc05412e] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Accepted: 08/07/2015] [Indexed: 11/21/2022]
Abstract
Azide- and alkyne-double functionalised graphene oxide (Click(2) GO) was synthesised and characterised with attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), thermogravimetric analysis (TGA) and Raman spectroscopy. Fourteen-percentage increase in azide content was found, after pre-treatment of GO with meta-chloroperoxybenzoic acid (mCPBA), determined with elemental analysis. No effect on A549 cell viability was found, up to 100 μg mL(-1) and 72 h of incubation, determined with the modified lactate dehydrogenase (mLDH) assay. Two sequential copper(i) catalysed azide-alkyne cycloaddition (CuAAC) reactions were performed to conjugate the propargyl-modified blood-brain barrier targeting peptide Angiopep-2, and a bis-azide polyethylene glycol (MW = 3500), to the Click(2) GO. The final conjugate was characterised with ATR-FTIR and TGA.
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Affiliation(s)
- Kuo-Ching Mei
- Institute of Pharmaceutical Science , King's College London , Franklin-Wilkins Building , 150 Stamford Street , London SE1 9NH , UK .
| | - Noelia Rubio
- Institute of Pharmaceutical Science , King's College London , Franklin-Wilkins Building , 150 Stamford Street , London SE1 9NH , UK .
| | - Pedro M. Costa
- Institute of Pharmaceutical Science , King's College London , Franklin-Wilkins Building , 150 Stamford Street , London SE1 9NH , UK .
| | - Houmam Kafa
- Institute of Pharmaceutical Science , King's College London , Franklin-Wilkins Building , 150 Stamford Street , London SE1 9NH , UK .
| | - Vincenzo Abbate
- Institute of Pharmaceutical Science , King's College London , Franklin-Wilkins Building , 150 Stamford Street , London SE1 9NH , UK .
| | - Frederic Festy
- Biomaterials and Biomimetics Department , King's College London Dental Institute , London SE1 9RT , UK
| | - Sukhvinder S. Bansal
- Institute of Pharmaceutical Science , King's College London , Franklin-Wilkins Building , 150 Stamford Street , London SE1 9NH , UK .
| | - Robert C. Hider
- Institute of Pharmaceutical Science , King's College London , Franklin-Wilkins Building , 150 Stamford Street , London SE1 9NH , UK .
| | - Khuloud T. Al-Jamal
- Institute of Pharmaceutical Science , King's College London , Franklin-Wilkins Building , 150 Stamford Street , London SE1 9NH , UK .
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40
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Udemba A, Smith G, Nguyen QD, Kaliszczak M, Carroll L, Fortt R, Fuchter MJ, Aboagye EO. Design, synthesis and initial characterisation of a radiolabelled [(18)F]pyrimidoindolone probe for detecting activated caspase-3/7. Org Biomol Chem 2015; 13:5418-23. [PMID: 25865735 DOI: 10.1039/c5ob00058k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Evasion of apoptosis is one of the six initially proposed hallmarks of cancer, and as such, a method to detect apoptosis in a tumour would be of considerable interest in both clinical trials of new cancer therapeutics, as well as for routine patient management. Activation of caspase-3/7 is a key biomarker of cellular apoptosis. Herein we describe the design, synthesis and initial characterisation of the first pyrimidoindolone compound for detection of caspase-3/7 activation using positron emission tomography.
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Affiliation(s)
- A Udemba
- Comprehensive Cancer Imaging Centre, Department of Surgery and Cancer, Imperial College London, Hammersmith Campus, Du Cane Road, London, W12 0NN, UK.
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41
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Bähr A, Wilkins LC, Ollegott K, Kariuki BM, Melen RL. Σ- versus π-activation of alkynyl benzoates using B(C₆F₅)₃. Molecules 2015; 20:4530-47. [PMID: 25774488 PMCID: PMC6272168 DOI: 10.3390/molecules20034530] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 02/17/2015] [Accepted: 02/28/2015] [Indexed: 11/16/2022] Open
Abstract
We have prepared a range of alkynyl benzoates in high yields and have investigated their reactivities with the strong Lewis acid B(C6F5)3. In such molecules both σ-activation of the carbonyl and π-activation of the alkyne are possible. In contrast to the reactivity of propargyl esters with B(C6F5)3 which proceed via 1,2-addition of the ester and B(C6F5)3 across the alkyne, the inclusion of an additional CH2 spacer switches off the intramolecular cyclization and selective σ-activation of the carbonyl group is observed through adduct formation. This change in reactivity appears due to the instability of the species which would be formed through B(C6F5)3 activation of the alkyne.
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Affiliation(s)
- Alexander Bähr
- School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, UK.
| | - Lewis C Wilkins
- School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, UK.
| | - Kevin Ollegott
- School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, UK.
| | - Benson M Kariuki
- School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, UK.
| | - Rebecca L Melen
- School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, UK.
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42
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Batool T, Rasool N, Gull Y, Noreen M, Nasim FUH, Yaqoob A, Zubair M, Rana UA, Khan SUD, Zia-Ul-Haq M, Jaafar HZE. A convenient method for the synthesis of (prop-2-ynyloxy)benzene derivatives via reaction with propargyl bromide, their optimization, scope and biological evaluation. PLoS One 2014; 9:e115457. [PMID: 25545159 PMCID: PMC4278708 DOI: 10.1371/journal.pone.0115457] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 11/24/2014] [Indexed: 11/30/2022] Open
Abstract
A highly convenient method has been developed for the synthesis of (prop-2-ynyloxy) benzene and its derivatives. Differently substituted phenol and aniline derivatives were allowed to react with propargyl bromide in the presence of K2CO3 base and acetone as solvent. The compounds were synthesized in good yields (53–85%). Low cost, high yields and easy availability of compounds helped in the synthesis. Electron withdrawing groups favor the formation of stable phenoxide ion thus in turn favors the formation of product while electron donating groups do not favor the reaction. Phenol derivatives gave good yields as compared to that of aniline. As aprotic polar solvents favor SN2 type reactions so acetone provided best solvation for the reactions. K2CO3 was proved to be good for the synthesis. Antibacterial, Antiurease and NO scavenging activity of synthesized compounds were also examined. 4-bromo-2-chloro-1-(prop-2-ynyloxy)benzene 2a was found most active compound against urease enzyme with a percentage inhibition of 82.00±0.09 at 100 µg/mL with IC50 value of 60.2. 2-bromo-4-methyl-1-(prop-2-ynyloxy)benzene 2d was found potent antibacterial against Bacillus subtillus showing excellent inhibitory action with percentage inhibition of 55.67±0.26 at 100 µg/ml wih IC50 value of 79.9. Based on results, it can be concluded that some of the synthesized compounds may have potential antiurease and antibacterial effects against several harmful substances.
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Affiliation(s)
- Tannaza Batool
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Nasir Rasool
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
- * E-mail: (NR); (HJ)
| | - Yasmeen Gull
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Mnaza Noreen
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | | | - Asma Yaqoob
- Department of Chemistry, Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Muhammad Zubair
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Usman Ali Rana
- Deanship of scientific research, College of Engineering, King Saud University, Riyadh, Saudi Arabia
| | - Salah Ud-Din Khan
- Deanship of scientific research, College of Engineering, King Saud University, Riyadh, Saudi Arabia
| | | | - Hawa Z. E. Jaafar
- Department of Crop Science, Faculty of Agriculture, 43400 UPM Serdang, Selangor, Malaysia
- * E-mail: (NR); (HJ)
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Niu Q, Sun H, Li X. Synthesis, photophysical and thin-film self-assembly properties of novel fluorescent molecules with carbon-carbon triple bonds. Spectrochim Acta A Mol Biomol Spectrosc 2014; 133:229-240. [PMID: 24945864 DOI: 10.1016/j.saa.2014.05.063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2013] [Revised: 03/19/2014] [Accepted: 05/16/2014] [Indexed: 06/03/2023]
Abstract
Three novel fluorescent molecules with carbon-carbon triple bonds 2TBEA, 2TBDA and TEPEB are successfully designed and synthesized. Their thermal, photophysical, electrochemical, electronic and thin-film self-assembly properties were characterized. Three dyes showed typical photoluminescence (PL) emission behaviors, the PL intensities firstly increased and then decreased with gradually decreasing concentration. The appealing fluorescence properties indicated that three dyes could be used as good fluorescent materials. Additionally, the thin-film self-assembly behaviors of three dyes were also investigated. The microstructures of their optical microscopy (OM) images exhibited high flexibility. Furthermore, SEM and AFM surface morphology of these self-assembly nanostructures revealed that three well-defined long-range order of rod-like and tube-like self-assembly systems exhibited interesting morphology properties. Therefore, three compounds may be of great interest for the development of organic thin-film materials.
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Affiliation(s)
- Qingfen Niu
- School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People's Republic of China
| | - Hongjian Sun
- School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People's Republic of China
| | - Xiaoyan Li
- School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People's Republic of China.
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Guerrero-Vásquez GA, Chinchilla N, Molinillo JMG, Macías FA. Synthesis of bioactive speciosins G and P from Hexagonia speciosa. J Nat Prod 2014; 77:2029-2036. [PMID: 25181306 DOI: 10.1021/np500341q] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The first total synthesis of speciosins P and G, previously isolated from Hexagonia speciosa, is reported. These compounds have been synthesized by Sonogashira coupling from readily available starting materials. Siccayne was also synthesized from the same starting material in two steps along with a number of other derivatives. The compounds were tested in the wheat coleoptile bioassay. The most active compound was the intermediate 18, followed by 29 and 17. The structural requirements for activity in these compounds are the presence of methoxy groups in the aromatic ring and a formyl or hydroxy group in the side chain.
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Affiliation(s)
- Guillermo A Guerrero-Vásquez
- Allelopathy Group, Department of Organic Chemistry, School of Sciences, INBIO Institute of Biomolecules, University of Cadiz , C/ República Saharaui, s/n, 11510-Puerto Real, Cádiz, Spain
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45
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Abstract
A novel and efficient Cu(I)-catalyzed oxidative homocoupling of terminal alkynes with diaziridinone as an oxidant is described. Various terminal alkynes can be transformed into the corresponding 1,3-diynes in good yields. The reaction process is base-free, operationally simple, and amenable to the gram scale.
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Affiliation(s)
- Yingguang Zhu
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA.
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Wilde KN, Whitten DG, Canavan HE. In vitro cytotoxicity of antimicrobial conjugated electrolytes: interactions with mammalian cells. ACS Appl Mater Interfaces 2013; 5:9305-11. [PMID: 24102342 DOI: 10.1021/am402476g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
An estimated 19 000 deaths and $3-4 billion in health care costs per year in the United States are attributed to methicillin-resistant Staphlococcus aureus (MRSA) infections. Certain conjugated phenylene ethynylene (CPE)-based polymers (PPE) and oligomers (OPE) have been demonstrated to exhibit dark and light-activated antimicrobial activity. Until recently, the relative cytotoxicity of these PPEs and OPEs toward mammalian cells haas been unknown, limiting the applications for which they may be used (e.g., reducing and/or preventing the spread of untreatable bacterial strains). In this work, we examine the toxicity of CPEs to mammalian cells using cytotoxicity assays of cellular monolayers. Eight CPEs, two PPEs and six OPEs, were selected for these studies based on their biocidal activity, and diversity of repeat unit number and functional groups. Briefly, two cell types were exposed to CPEs at concentrations ranging from 1-100 ug/mL for 24 h. We find that concentration largely determines the resulting viability of cells, although at intermediate concentrations (5-10 ug/mL), the effect of light on light-activated compounds is very important. Furthermore, we find that the longer-chained compounds are cytotoxic at much higher concentrations, and therefore have the widest range of concentrations available for potential applications.
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Affiliation(s)
- Kristin N Wilde
- Center for Biomedical Engineering, Department of Chemical and Nuclear Engineering, MSC01-1141, University of New Mexico , Albuquerque, New Mexico 87131, United States
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47
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Abstract
The synthesis of β,γ-alkynyl esters and amides using air-stable potassium alkynyltrifluoroborates as nucleophilic partners in a mild Suzuki-Miyaura cross-coupling reaction has been achieved. Propargyl esters and amides were obtained in high yields using a low catalyst loading, and the substrate scope of the reaction has been significantly improved over previous methods.
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Affiliation(s)
- Gary A. Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Kaitlin M. Traister
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104-6323, United States
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48
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Banerjee A, Maschauer S, Hübner H, Gmeiner P, Prante O. Click chemistry based synthesis of dopamine D4 selective receptor ligands for the selection of potential PET tracers. Bioorg Med Chem Lett 2013; 23:6079-82. [PMID: 24100078 DOI: 10.1016/j.bmcl.2013.09.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 09/04/2013] [Accepted: 09/09/2013] [Indexed: 11/20/2022]
Abstract
Taking advantage of click chemistry, a library of N-arylpiperazinylmethyl triazoles bearing fluoro substituted appendages was synthesized and the target compounds were investigated for dopamine and serotonin receptor binding. With the aim to bias their hydrophilicity and to optimize their D4 receptor affinity and selectivity, a concise series of triazoles containing fluoroalkyl, fluoroalkoxy, fluoroalkoxyphenyl, and deoxyfluoroglucosyl substituents was studied. The D4 receptor affinity and selectivity could be tuned by altering the chemical moiety attached to the triazole unit. Among the test compounds, the fluoroethoxyphenyl derivative 15b showed weak partial agonism at D4 and a K(i) value of 14 nM, while its fluoropropoxyphenyl homologue 16a turned out to act as a neutral D4 antagonist (K(i)=5.1 nM). Both, 15b and 16a revealed an excellent balance between D4 receptor affinity and subtype selectivity, providing lead candidates for the development of (18)F-labeled radioligands for D4 receptor imaging studies by positron emission tomography (PET).
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Affiliation(s)
- Ashutosh Banerjee
- Molecular Imaging and Radiochemistry, Department of Nuclear Medicine, Friedrich-Alexander University, Schwabachanlage 6, D-91054 Erlangen, Germany; Department of Medicinal Chemistry, Emil Fischer Center, Friedrich-Alexander University, Schuhstraβe 19, D-91052 Erlangen, Germany
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Huang L, Yang HB, Zhang DH, Zhang Z, Tang XY, Xu Q, Shi M. Gold-Catalyzed Intramolecular Regio- and Enantioselective Cycloisomerization of 1,1-Bis(indolyl)-5-alkynes. Angew Chem Int Ed Engl 2013; 52:6767-71. [PMID: 23670962 DOI: 10.1002/anie.201302632] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Long Huang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China
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Mazur M, Barras A, Kuncser V, Galatanu A, Zaitzev V, Turcheniuk KV, Woisel P, Lyskawa J, Laure W, Siriwardena A, Boukherroub R, Szunerits S. Iron oxide magnetic nanoparticles with versatile surface functions based on dopamine anchors. Nanoscale 2013; 5:2692-702. [PMID: 23420060 DOI: 10.1039/c3nr33506b] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The synthesis of multifunctional magnetic nanoparticles (MF-MPs) is one of the most active research areas in advanced materials as their multifunctional surfaces allow conjugation of biological and chemical molecules, thus making it possible to achieve target-specific diagnostic in parallel to therapeutics. We report here a simple strategy to integrate in a one-step reaction several reactive sites onto the particles. The preparation of MF-MPs is based on their simultaneous modification with differently functionalized dopamine derivatives using simple solution chemistry. The formed MF-MPs show comparable magnetic properties to those of naked nanoparticles with almost unaltered particle size of around 25 nm. The different termini, amine, azide and maleimide functions, enable further functionalization of MF-MPs by the grafting-on approach. Michael addition, Cu(i) catalyzed « click » chemistry and amidation reactions are performed on the MF-MPs integrating subsequently 6-(ferrocenyl)-hexanethiol, horseradish peroxidase (HRP) and mannose.
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Affiliation(s)
- Mykola Mazur
- Institut de Recherche Interdisciplinaire (IRI, USR 3078 CNRS), Université Lille 1, Parc de Haute Borne, 50 Avenue de Halley, BP 70478, 59658 Villeneuve d'Ascq, France
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