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One-pot synthesis of 1,2,4-oxadiazoles from chalcogen amino acid derivatives under microwave irradiation. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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2
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Design, synthesis, biological evaluation and molecular docking of new uracil analogs-1,2,4-oxadiazole hybrids as potential anticancer agents. Bioorg Med Chem Lett 2020; 30:127438. [DOI: 10.1016/j.bmcl.2020.127438] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/03/2020] [Accepted: 07/21/2020] [Indexed: 01/12/2023]
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3
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Touati-Jallabe Y, Tintillier T, Mauchauffée E, Boucher JL, Leroy J, Ramassamy B, Hamzé A, Mezghenna K, Bouzekrini A, Verna C, Martinez J, Lajoix AD, Hernandez JF. Solid-Phase Synthesis of Substrate-Based Dipeptides and Heterocyclic Pseudo-dipeptides as Potential NO Synthase Inhibitors. ChemMedChem 2020; 15:517-531. [PMID: 32027778 DOI: 10.1002/cmdc.201900659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 02/03/2020] [Indexed: 11/06/2022]
Abstract
More than 160 arginine analogues modified on the C-terminus via either an amide bond or a heterocyclic moiety (1,2,4-oxadiazole, 1,3,4-oxadiazole and 1,2,4-triazole) were prepared as potential inhibitors of NO synthases (NOS). A methodology involving formation of a thiocitrulline intermediate linked through its side-chain on a solid support followed by modification of its carboxylate group was developed. Finally, the side-chain thiourea group was either let unchanged, S-alkylated (Me, Et) or guanidinylated (Me, Et) to yield respectively after TFA treatment the corresponding thiocitrulline, S-Me/Et-isothiocitrulline and N-Me/Et-arginine substrate analogues. They all were tested against three recombinant NOS isoforms. Several compounds containing a S-Et- or a S-Me-Itc moiety and mainly belonging to both the dipeptide-like and 1,2,4-oxadiazole series were shown to inhibit nNOS and iNOS with IC50 in the 1-50 μM range. Spectral studies confirmed that these new compounds interacted at the heme active site. The more active compounds were found to inhibit intra-cellular iNOS expressed in RAW264.7 and INS-1 cells with similar efficiency than the reference compounds L-NIL and SEIT.
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Affiliation(s)
- Youness Touati-Jallabe
- Institut des Biomolécules Max Mousseron, Université Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 34000, Montpellier, France.,Avara Pharmaceutical Services, Boucherville, QC, J4B 7 K8, Canada
| | - Thibault Tintillier
- Institut des Biomolécules Max Mousseron, Université Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 34000, Montpellier, France.,Asymptote Project Management, 1 rue Edisson, 69500, Bron, France
| | - Elodie Mauchauffée
- Institut des Biomolécules Max Mousseron, Université Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 34000, Montpellier, France
| | - Jean-Luc Boucher
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques UMR8601, CNRS, Université Paris-Descartes, 45 rue des Saints Pères, 75270, Paris Cedex 06, France
| | - Jérémy Leroy
- Centre Biocommunication en Cardio-métabolique, Université Montpellier, Faculté de Pharmacie, 34000, Montpellier, France
| | - Booma Ramassamy
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques UMR8601, CNRS, Université Paris-Descartes, 45 rue des Saints Pères, 75270, Paris Cedex 06, France
| | - Abdallah Hamzé
- Institut des Biomolécules Max Mousseron, Université Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 34000, Montpellier, France.,Current address: BioCIS, UMR 8076, CNRS, Université Paris Sud, Université Paris-Saclay, 92296, Châtenay-Malabry, France
| | - Karima Mezghenna
- Centre Biocommunication en Cardio-métabolique, Université Montpellier, Faculté de Pharmacie, 34000, Montpellier, France
| | - Amine Bouzekrini
- Centre Biocommunication en Cardio-métabolique, Université Montpellier, Faculté de Pharmacie, 34000, Montpellier, France
| | - Claudia Verna
- Institut des Biomolécules Max Mousseron, Université Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 34000, Montpellier, France
| | - Jean Martinez
- Institut des Biomolécules Max Mousseron, Université Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 34000, Montpellier, France
| | - Anne-Dominique Lajoix
- Centre Biocommunication en Cardio-métabolique, Université Montpellier, Faculté de Pharmacie, 34000, Montpellier, France
| | - Jean-François Hernandez
- Institut des Biomolécules Max Mousseron, Université Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 34000, Montpellier, France
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4
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Li M, Li W, Lin CD, Wang JH, Wen LR. One Base for Two Shots: Metal-Free Substituent-Controlled Synthesis of Two Kinds of Oxadiazine Derivatives from Alkynylbenziodoxolones and Amidoximes. J Org Chem 2019; 84:6904-6915. [DOI: 10.1021/acs.joc.9b00659] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ming Li
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Wei Li
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Cheng-Dong Lin
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Jia-Hui Wang
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Li-Rong Wen
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
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A Straightforward and High-Yielding Synthesis of 1,2,4-Oxadiazoles from Chiral N-Protected α-Amino Acids and Amidoximes in Acetone-Water: An Eco-Friendly Approach. J CHEM-NY 2019. [DOI: 10.1155/2019/8589325] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A straightforward and high-yielding methodology for the synthesis of a high structural diversity of 1,2,4-oxadiazoles from different chiral N-protected α-amino acids and amidoximes under microwave (MW) irradiation is described herein. This greener approach gives the desired products using acetone/water as solvent in very short reaction times.
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6
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Liu J, Li H, Chen KX, Zuo JP, Guo YW, Tang W, Li XW. Design and Synthesis of Marine Phidianidine Derivatives as Potential Immunosuppressive Agents. J Med Chem 2018; 61:11298-11308. [DOI: 10.1021/acs.jmedchem.8b01430] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jin Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Heng Li
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
- Laboratory of Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Kai-Xian Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China
- Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology (Qingdao), 1 Wenhai Road, Aoshanwei, Jimo, Qingdao 266237, China
| | - Jian-Ping Zuo
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
- Laboratory of Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yue-Wei Guo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
- Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology (Qingdao), 1 Wenhai Road, Aoshanwei, Jimo, Qingdao 266237, China
| | - Wei Tang
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
- Laboratory of Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology (Qingdao), 1 Wenhai Road, Aoshanwei, Jimo, Qingdao 266237, China
| | - Xu-Wen Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
- Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology (Qingdao), 1 Wenhai Road, Aoshanwei, Jimo, Qingdao 266237, China
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7
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Purushotham N, Poojary B. An Expeditious Synthesis of Chiral 1,2,4-Oxadiazole Peptidomimetics from Heteroaroyl Monopeptides. ChemistrySelect 2018. [DOI: 10.1002/slct.201801921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nikil Purushotham
- Department of Chemistry; Mangalore University, Mangalagangothri-; 574 199 Karnataka India
| | - Boja Poojary
- Department of Chemistry; Mangalore University, Mangalagangothri-; 574 199 Karnataka India
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8
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Liu J, Chen Y, Li JY, Luo C, Li J, Chen KX, Li XW, Guo YW. Function-Oriented Synthesis of Marine Phidianidine Derivatives as Potential PTP1B Inhibitors with Specific Selectivity. Mar Drugs 2018; 16:md16030097. [PMID: 29558377 PMCID: PMC5867641 DOI: 10.3390/md16030097] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/07/2018] [Accepted: 03/07/2018] [Indexed: 02/07/2023] Open
Abstract
Phidianidines A and B are two novel marine indole alkaloids bearing an uncommon 1,2,4-oxadiazole ring and exhibiting various biological activities. Our previous research showed that the synthesized phidianidine analogs had the potential to inhibit the activity of protein tyrosine phosphatase 1B (PTP1B), a validated target for Type II diabetes, which indicates that these analogs are worth further structural modification. Therefore, in this paper, a series of phidianidine derivatives were designed and rapidly synthesized with a function-oriented synthesis (FOS) strategy. Their inhibitory effects on PTP1B and T-cell protein tyrosine phosphatase (TCPTP) were evaluated, and several compounds displayed significant inhibitory potency and specific selectivity over PTP1B. The structure–activity relationship (SAR) and molecular docking analyses are also described.
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Affiliation(s)
- Jin Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China.
- Nano Science and Technology Institute, University of Science and Technology of China, 166 Ren Ai Road, Suzhou 215123, China.
| | - Yu Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China.
| | - Jing-Ya Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China.
| | - Cheng Luo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China.
- Open Studio for Druggability Research of Marine Natural Products, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Aoshanwei, Jimo, Qingdao 266237, China.
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China.
- Open Studio for Druggability Research of Marine Natural Products, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Aoshanwei, Jimo, Qingdao 266237, China.
| | - Kai-Xian Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China.
- Open Studio for Druggability Research of Marine Natural Products, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Aoshanwei, Jimo, Qingdao 266237, China.
| | - Xu-Wen Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China.
- Open Studio for Druggability Research of Marine Natural Products, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Aoshanwei, Jimo, Qingdao 266237, China.
| | - Yue-Wei Guo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China.
- Open Studio for Druggability Research of Marine Natural Products, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Aoshanwei, Jimo, Qingdao 266237, China.
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9
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Tereshchenko AD, Myronchuk JS, Leitchenko LD, Knysh IV, Tokmakova GO, Litsis OO, Tolmachev A, Liubchak K, Mykhailiuk P. Synthesis of 3-oxadiazolyl/triazolyl morpholines: Novel scaffolds for drug discovery. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.12.052] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Brahmi J, Ghannay S, Bakari S, Aouadi K, Kadri A, Msaddek M, Vidal S. Unprecedented stereoselective synthesis of 3-methylisoxazolidine-5-aryl-1,2,4-oxadiazoles via 1,3-dipolar cycloaddition and study of their in vitro antioxidant activity. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1244692] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jihed Brahmi
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity, Faculty of Sciences of Monastir, University of Monastir, Monastir, Tunisia
| | - Siwar Ghannay
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity, Faculty of Sciences of Monastir, University of Monastir, Monastir, Tunisia
| | - Sana Bakari
- Laboratory of Plant Biotechnology Applied to Crop Improvement, Faculty of Science of Sfax, University of Sfax, Sfax, Tunisia
| | - Kaïss Aouadi
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity, Faculty of Sciences of Monastir, University of Monastir, Monastir, Tunisia
| | - Adel Kadri
- Laboratory of Plant Biotechnology Applied to Crop Improvement, Faculty of Science of Sfax, University of Sfax, Sfax, Tunisia
- College of Science and Arts in Baljurashi, Al Baha University, Al Baha, Saudi Arabia
| | - Moncef Msaddek
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity, Faculty of Sciences of Monastir, University of Monastir, Monastir, Tunisia
| | - Sébastien Vidal
- University of Lyon 1, Institute of Molecular and Supramolecular Chemistry and Biochemistry, UMR CNRS 5246, Organic Chemistry 2: Glycochemistry, Villeurbanne, France
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11
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Ovdiichuk OV, Hordiyenko OV, Arrault A. Synthesis and conformational study of novel pyrazine-based pseudopeptides bearing amidoxime, amidoxime ester and 1,2,4-oxadiazole units. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.069] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Design, synthesis and in vitro activity of phidianidine B derivatives as novel PTP1B inhibitors with specific selectivity. Bioorg Med Chem Lett 2016; 26:778-781. [DOI: 10.1016/j.bmcl.2015.12.097] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 12/23/2015] [Accepted: 12/29/2015] [Indexed: 11/21/2022]
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13
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Shruthi N, Poojary B, Kumar V, Hussain MM, Rai VM, Pai VR, Bhat M, Revannasiddappa BC. Novel benzimidazole–oxadiazole hybrid molecules as promising antimicrobial agents. RSC Adv 2016. [DOI: 10.1039/c5ra23282a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
In the present study, we describe the design and expeditious synthesis of novel 2-aryl-5-(3-aryl-[1,2,4]-oxadiazol-5-yl)-1-methyl-1H-benzo[d]imidazole hybrid molecules as promising antimicrobial agents.
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Affiliation(s)
- N. Shruthi
- Department of Chemistry
- Mangalore University
- Mangalagangothri-574199
- India
| | - Boja Poojary
- Department of Chemistry
- Mangalore University
- Mangalagangothri-574199
- India
| | - Vasantha Kumar
- Department of Chemistry
- Mangalore University
- Mangalagangothri-574199
- India
| | | | | | - Vinitha R. Pai
- Department of Biochemistry
- Yenepoya University
- Mangalore
- India
| | - Mahima Bhat
- Department of Chemistry
- Mangalore University
- Mangalagangothri-574199
- India
| | - B. C. Revannasiddappa
- Department of Pharmacology
- N.G.S.M. Institute of Pharmaceutical Sciences
- Mangalore-575 018
- India
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14
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Kamal A, Reddy TS, Vishnuvardhan M, Nimbarte VD, Subba Rao A, Srinivasulu V, Shankaraiah N. Synthesis of 2-aryl-1,2,4-oxadiazolo-benzimidazoles: Tubulin polymerization inhibitors and apoptosis inducing agents. Bioorg Med Chem 2015; 23:4608-4623. [DOI: 10.1016/j.bmc.2015.05.060] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 05/29/2015] [Accepted: 05/30/2015] [Indexed: 12/19/2022]
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15
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Hosseinzadeh-Khanmiri R, Moghimi A, Shaabani A, Valizadeh H, Ng SW. Synthesis of 2-(1,2,4-oxadiazol-3-yl)quinazolin-4(3H)-ones from diaminoglyoxime-based nitrones. Mol Divers 2015; 19:501-10. [PMID: 25900668 DOI: 10.1007/s11030-015-9588-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 03/21/2015] [Indexed: 11/24/2022]
Abstract
Various 2-[5-(aryl)-1,2,4-oxadiazol-3-yl]quinazolin-4(3H)-ones have been synthesized from the reaction of diaminoglyoxime-based nitrones with methyl 2-aminobenzoate or 2-aminobenzamide in the presence of acetic acid at 100 °C. The reaction was extended as a one-pot three-component approach starting from diaminoglyoxime, aldehyde and methyl 2-aminobenzoate.
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16
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Synthesis and biological evaluation of novel marine-derived indole-based 1,2,4-oxadiazoles derivatives as multifunctional neuroprotective agents. Bioorg Med Chem Lett 2015; 25:216-20. [DOI: 10.1016/j.bmcl.2014.11.068] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 11/21/2014] [Accepted: 11/26/2014] [Indexed: 01/29/2023]
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17
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The design and synthesis of Ala-Glu/iGln mimetics: heterocyclic building blocks for pseudopeptides. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.12.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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19
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Gupta PK, Hussain MK, Asad M, Kant R, Mahar R, Shukla SK, Hajela K. A metal-free tandem approach to prepare structurally diverse N-heterocycles: synthesis of 1,2,4-oxadiazoles and pyrimidinones. NEW J CHEM 2014. [DOI: 10.1039/c4nj00361f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-heterocycles, namely 1,2,4-oxadiazoles and 2,6 disubstituted pyrimidin-4-ones, have been synthesised in one pot via carboxamidation of amidines with aryl carboxylic acids and aryl propargylic acids under metal-free conditions.
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Affiliation(s)
- Puneet K. Gupta
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
| | - Mohd. Kamil Hussain
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
| | - Mohd. Asad
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
| | - Ruchir Kant
- Molecular and Structural Biology Division
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
| | - Rohit Mahar
- Sophisticated Analytical Instrument Facility
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
| | - Sanjeev K. Shukla
- Sophisticated Analytical Instrument Facility
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
| | - Kanchan Hajela
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
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21
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Su D, Duan H, Wei Z, Cao J, Liang D, Lin Y. Condensation of Vilsmeier salts, derived from tetraalkylureas, with amidoximes: a novel approach to access N,N-dialkyl-1,2,4-oxadiazol-5-amines. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.10.061] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Moghimi A, Khanmiri RH, Omrani I, Shaabani A. A new library of 4(3H)- and 4,4′(3H,3H′)-quinazolinones and 2-(5-alkyl-1,2,4-oxadiazol-3-yl)quinazolin-4(3H)-one obtained from diaminoglyoxime. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.05.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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Kandre S, Bhagat PR, Sharma R, Gupte A. Microwave assisted synthesis of 3,5-disubstituted 1,2,4-oxadiazoles from substituted amidoximes and benzoyl cyanides. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.101] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Chu L, Armstrong HM, Chang LL, Cheng AF, Colwell L, Cui J, Evans J, Galka A, Goulet MT, Hayes N, Lo J, Menke J, Ok HO, Ondeyka DL, Patel M, Quaker GM, Sings H, Witkin SL, Zhao A, Ujjainwalla F. Evaluation of endo- and exo-aryl-substitutions and central scaffold modifications on diphenyl substituted alkanes as 5-lipoxygenase activating protein inhibitors. Bioorg Med Chem Lett 2012; 22:4133-8. [DOI: 10.1016/j.bmcl.2012.04.064] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Revised: 04/04/2012] [Accepted: 04/10/2012] [Indexed: 01/27/2023]
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25
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Layton ME, Kelly MJ, Rodzinak KJ, Sanderson PE, Young SD, Bednar RA, DiLella AG, Mcdonald TP, Wang H, Mosser SD, Fay JF, Cunningham ME, Reiss DR, Fandozzi C, Trainor N, Liang A, Lis EV, Seabrook GR, Urban MO, Yergey J, Koblan KS. Discovery of 3-substituted aminocyclopentanes as potent and orally bioavailable NR2B subtype-selective NMDA antagonists. ACS Chem Neurosci 2011; 2:352-62. [PMID: 22816022 DOI: 10.1021/cn200013d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Accepted: 04/15/2011] [Indexed: 01/16/2023] Open
Abstract
A series of 3-substituted aminocyclopentanes has been identified as highly potent and selective NR2B receptor antagonists. Incorporation of a 1,2,4-oxadiazole linker and substitution of the pendant phenyl ring led to the discovery of orally bioavailable analogues that showed efficient NR2B receptor occupancy in rats. Unlike nonselective NMDA antagonists, the NR2B-selective antagonist 22 showed no adverse affects on motor coordination in the rotarod assay at high dose. Compound 22 was efficacious following oral administration in a spinal nerve ligation model of neuropathic pain and in an acute model of Parkinson's disease in a dose dependent manner.
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Affiliation(s)
- Mark E. Layton
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Michael J. Kelly
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Kevin J. Rodzinak
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Philip E. Sanderson
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Steven D. Young
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Rodney A. Bednar
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Anthony G. DiLella
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Terrence P. Mcdonald
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Hao Wang
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Scott D. Mosser
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - John F. Fay
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Michael E. Cunningham
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Duane R. Reiss
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Christine Fandozzi
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Nicole Trainor
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Annie Liang
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Edward V. Lis
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Guy R. Seabrook
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Mark O. Urban
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - James Yergey
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
| | - Kenneth S. Koblan
- Departments of †Medicinal Chemistry, ‡Molecular Pain Research, §Movement Disorders, and ∥Drug Metabolism, Merck Research Laboratories, West Point, Pennsylvania 19486, United States
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26
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Bretanha LC, Teixeira VE, Ritter M, Siqueira GM, Cunico W, Pereira CMP, Freitag RA. Ultrasound-promoted synthesis of 3-trichloromethyl-5-alkyl(aryl)-1,2,4-oxadiazoles. ULTRASONICS SONOCHEMISTRY 2011; 18:704-7. [PMID: 21115383 DOI: 10.1016/j.ultsonch.2010.09.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 08/16/2010] [Accepted: 09/30/2010] [Indexed: 05/14/2023]
Abstract
The alternative synthesis of 12 1,2,4-oxadiazoles using ultrasound irradiation from trichloroacetoamidoxime and acyl chlorides is reported. Seven of them are novel compounds. The 3-trichloromethyl-5alkyl(aryl)-1,2,4-oxadiazoles have been synthesised in better yields and shorter reaction times compared to the conventional method. This protocol can be applicable for preparation of 1,2,4-oxadiazoles containing aryl or alkyl groups attached at their C-5 side-chain.
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Affiliation(s)
- Lizandra C Bretanha
- NuQuiA-Núcleo de Química Aplicada, Departamento de Química Orgânica, Universidade Federal de Pelotas, Brazil
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Kumar D, Patel G, Chavers AK, Chang KH, Shah K. Synthesis of novel 1,2,4-oxadiazoles and analogues as potential anticancer agents. Eur J Med Chem 2011; 46:3085-92. [PMID: 21481985 DOI: 10.1016/j.ejmech.2011.03.031] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2010] [Revised: 03/10/2011] [Accepted: 03/15/2011] [Indexed: 10/18/2022]
Abstract
A library of 3,5-disubstituted-1,2,4-oxadiazoles 7-9 and their bioisosters, 1,3,4-oxadiazole 14 and 1,3,4-thiadiazole 16, were synthesized and evaluated in vitro for their anticancer potential against a panel of six human cancer cell lines. The key step in the synthesis of oxadiazoles 7-9 involve coupling of amidoxime 6 with an appropriate carboxylic acid followed by thermal cyclization. The bioisosteres, 1,3,4-oxadiazole 14 and 1,3,4-thiadiazole 16 were prepared from the reaction of a common precursor diacylhydrazine 13 with thionyl chloride and Lawesson's reagent, respectively. The anticancer studies on the synthesized compounds revealed that presence of a cyclopentyloxy or n-butyloxy on the C-3 aryl ring and piperdin-4-yl or trichloromethyl at the C-5 position of 1,2,4-oxadiazole is essential for good activity. In particular, 1,2,4-oxadiazole 7i and analogue 1,3,4-thiadiazole 16 exhibited significant activity against DU145 (IC(50): 9.3 μM) and MDA-MB-231 (IC(50): 9.2 μM) cell lines, respectively.
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Affiliation(s)
- Dalip Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333 031, India.
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28
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Dosa S, Daniels J, Gütschow M. Biaryl sulfonamides from O-acetyl amidoximes: 1,2,4-Oxadiazole cyclization under acidic conditions. J Heterocycl Chem 2011. [DOI: 10.1002/jhet.603] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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29
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Porcheddu A, Cadoni R, De Luca L. A fast and efficient one-pot microwave assisted synthesis of variously di-substituted 1,2,4-oxadiazoles. Org Biomol Chem 2011; 9:7539-46. [DOI: 10.1039/c1ob06055d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Bovens S, Schulze Elfringhoff A, Kaptur M, Reinhardt D, Schäfers M, Lehr M. 1-(5-Carboxyindol-1-yl)propan-2-one Inhibitors of Human Cytosolic Phospholipase A2α: Effect of Substituents in Position 3 of the Indole Scaffold on Inhibitory Potency, Metabolic Stability, Solubility, and Bioavailability. J Med Chem 2010; 53:8298-308. [DOI: 10.1021/jm101094p] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stefanie Bovens
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Hittorfstrasse 58-62, 48149 Münster, Germany
| | - Alwine Schulze Elfringhoff
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Hittorfstrasse 58-62, 48149 Münster, Germany
| | - Martina Kaptur
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Hittorfstrasse 58-62, 48149 Münster, Germany
| | - Dirk Reinhardt
- European Institute for Molecular Imaging (EIMI), University of Münster, Mendelstrasse 11, 48149 Münster, Germany
| | - Michael Schäfers
- European Institute for Molecular Imaging (EIMI), University of Münster, Mendelstrasse 11, 48149 Münster, Germany
| | - Matthias Lehr
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Hittorfstrasse 58-62, 48149 Münster, Germany
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31
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Discovery of NBI-77860/GSK561679, a potent corticotropin-releasing factor (CRF1) receptor antagonist with improved pharmacokinetic properties. Bioorg Med Chem Lett 2010; 20:7259-64. [PMID: 21074436 DOI: 10.1016/j.bmcl.2010.10.095] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Revised: 10/18/2010] [Accepted: 10/19/2010] [Indexed: 11/20/2022]
Abstract
Antagonists of the corticotropin-releasing factor (CRF) neuropeptide may prove effective in treating stress and anxiety related disorders. In an effort to identify antagonists with improved physico-chemical properties a new series of CRF(1) antagonists were designed to substitute the propyl groups at the C7 position of the pyrazolo[1,5-a]pyrimidine core of 1 with heterocycles. Compound (S)-8d was identified as a high affinity ligand with a pK(i) value of 8.2 and a functional CRF(1) antagonist with pIC(50) value of 7.0 in the in vitro CRF ACTH production assay.
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32
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Hencken CP, Jones-Brando L, Bordón C, Stohler R, Mott BT, Yolken R, Posner GH, Woodard LE. Thiazole, oxadiazole, and carboxamide derivatives of artemisinin are highly selective and potent inhibitors of Toxoplasma gondii. J Med Chem 2010; 53:3594-601. [PMID: 20373807 DOI: 10.1021/jm901857d] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have prepared 23 new dehydroartemisinin (DART) trioxane derivatives (11 thiazoles, 2 oxadiazoles, and 10 carboxamides) and have screened them for in vitro activity in the Toxoplasma lytic cycle. Fifteen (65%) of the derivatives were noncytotoxic to host cells (TD(50) > or = 320 microM). Eight thiazole derivatives and two carboxamide derivatives displayed effective inhibition of Toxoplasma growth (IC(50) = 0.25-0.42 microM), comparable in potency to artemether (IC(50) = 0.31 microM) and >100 times more inhibitory than the currently employed front-line drug trimethoprim (IC(50) = 46 microM). The thiazoles as a group were more effective than the other derivatives at inhibiting growth of extracellular as well as intracellular parasites. Unexpectedly, two thiazole trioxanes (5 and 6) were parasiticidal; both inhibited parasite replication irreversibly after parasite exposure to 10 microM of drug for 24 h, whereas the standard trioxane drugs artemisinin and artemether were not parasiticidal. Some of the new derivatives of artemisinin described here represent effective anti-Toxoplasma trioxanes as well as molecular probes for elucidating the mechanism of action of the DART class of artemisinin derivatives.
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Affiliation(s)
- Christopher P Hencken
- Department of Chemistry, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, USA.
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33
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Foss FW, Mathews TP, Kharel Y, Kennedy PC, Snyder AH, Davis MD, Lynch KR, Macdonald TL. Synthesis and biological evaluation of sphingosine kinase substrates as sphingosine-1-phosphate receptor prodrugs. Bioorg Med Chem 2009; 17:6123-36. [PMID: 19632123 DOI: 10.1016/j.bmc.2009.04.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Revised: 04/03/2009] [Accepted: 04/09/2009] [Indexed: 10/20/2022]
Abstract
In the search for bioactive sphingosine 1-phosphate (S1P) receptor ligands, a series of 2-amino-2-heterocyclic-propanols were synthesized. These molecules were discovered to be substrates of human-sphingosine kinases 1 and 2 (SPHK1 and SPHK2). When phosphorylated, the resultant phosphates showed varied activities at the five sphingosine-1-phosphate (S1P) receptors (S1P(1-5)). Agonism at S1P(1) was displayed in vivo by induction of lymphopenia. A stereochemical preference of the quaternary carbon was crucial for phosphorylation by the kinases and alters binding affinities at the S1P receptors. Oxazole and oxadiazole compounds are superior kinase substrates to FTY720, the prototypical prodrug immunomodulator, fingolimod (FTY720). The oxazole-derived structure was the most active for human SPHK2. Imidazole analogues were less active substrates for SPHKs, but more potent and selective agonists of the S1P(1) receptor; additionally, the imidazole class of compounds rendered mice lymphopenic.
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Affiliation(s)
- Frank W Foss
- Department of Chemistry, University of Virginia, Charlottesville, 22904, USA
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34
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Sureshbabu VV, Hemantha HP, Naik SA. Synthesis of 1,2,4-oxadiazole-linked orthogonally urethane-protected dipeptide mimetics. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.06.091] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Pace P, Di Francesco ME, Gardelli C, Harper S, Muraglia E, Nizi E, Orvieto F, Petrocchi A, Poma M, Rowley M, Scarpelli R, Laufer R, Gonzalez Paz O, Monteagudo E, Bonelli F, Hazuda D, Stillmock KA, Summa V. Dihydroxypyrimidine-4-carboxamides as novel potent and selective HIV integrase inhibitors. J Med Chem 2007; 50:2225-39. [PMID: 17428043 DOI: 10.1021/jm070027u] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Human immunodeficiency virus type-1 (HIV-1) integrase, one of the three constitutive viral enzymes required for replication, is a rational target for chemotherapeutic intervention in the treatment of AIDS that has also recently been confirmed in the clinical setting. We report here on the design and synthesis of N-benzyl-5,6-dihydroxypyrimidine-4-carboxamides as a class of agents which exhibits potent inhibition of the HIV-integrase-catalyzed strand transfer process. In the current study, structural modifications on these molecules were made in order to examine effects on HIV-integrase inhibitory potencies. One of the most interesting compounds for this series is 2-[1-(dimethylamino)-1-methylethyl]-N-(4-fluorobenzyl)-5,6-dihydroxypyrimidine-4-carboxamide 38, with a CIC95 of 78 nM in the cell-based assay in the presence of serum proteins. The compound has favorable pharmacokinetic properties in preclinical species (rats, dogs, and monkeys) and shows no liabilities in several counterscreening assays, highlighting its potential as a clinically useful antiviral agent.
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Affiliation(s)
- Paola Pace
- Istituto Di Ricerche Di Biologia Molecolare, P. Angeletti S.p.A. (Merck Research Laboratories, Rome), Via Pontina Km 30,600, 00040 Pomezia, Italy.
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36
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Jakopin Ž, Roškar R, Dolenc MS. Synthesis of 3,5-disubstituted 1,2,4-oxadiazoles as peptidomimetic building blocks. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.12.077] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Legeay JC, Vanden Eynde JJ, Bazureau JP. A new approach to N-3 functionalized 3,4-dihydropyrimidine-2(1H)-ones with 1,2,4-oxadiazole group as amide isostere via ionic liquid-phase technology. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.11.148] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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38
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Lo Celso F, Pibiri I, Triolo A, Triolo R, Pace A, Buscemi S, Vivona N. Study on the thermotropic properties of highly fluorinated 1,2,4-oxadiazolylpyridinium salts and their perspective applications as ionic liquid crystals. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b615190f] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Katritzky AR, Khashab NM, Kirichenko N, Singh A. Microwave-Assisted Preparations of Amidrazones and Amidoximes. J Org Chem 2006; 71:9051-6. [PMID: 17109529 DOI: 10.1021/jo061410u] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In an operationally straightforward and efficient method, amidrazones and amidoximes are prepared in yields of 65-87% from imidoylbenzotriazoles by microwave heating for 5-20 min with the appropriate hydrazine or hydroxylamine.
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Affiliation(s)
- Alan R Katritzky
- Center for Heterocyclic Compounds, University of Florida, Department of Chemistry, Gainesville, Florida 32611-7200, USA.
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40
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Synthesis of fluorinated indazoles through ANRORC-like rearrangement of 1,2,4-oxadiazoles with hydrazine. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.06.100] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Benltifa M, Vidal S, Fenet B, Msaddek M, Goekjian PG, Praly JP, Brunyánszki A, Docsa T, Gergely P. In Search of Glycogen Phosphorylase Inhibitors: 5-Substituted 3-C-Glucopyranosyl-1,2,4-oxadiazoles from β-D-Glucopyranosyl Cyanides upon Cyclization ofO-Acylamidoxime Intermediates. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600073] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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42
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Lima Leite AC, Santos LMF, Barbosa FF, de Oliveira Cardoso MV, Moreira DRM, de Souza IA. Synthesis of aminoacyl thiaolidones as potential antitumour agents. Biomed Pharmacother 2006; 60:121-6. [PMID: 16545938 DOI: 10.1016/j.biopha.2006.01.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
In the scope of a research program aiming to perform the synthesis and pharmacological evaluation of novel possible antitumour prototype compounds, we report in this paper the synthesis of new peptidyl derivatives from 4-thiazolidone nucleus. The synthesis reactions have been performed based in peptide synthesis as strategies. The characterisation of this new class of compounds was performed with IR and (1)H-NMR spectroscopy. In vivo, antitumour activity tests showed that some of these compounds were able to inhibit significantly sarcoma S-180 tumour growth in mice, revealing itself as a new potential class of drugs in cancer chemotherapy.
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Affiliation(s)
- Ana Cristina Lima Leite
- Laboratório de Planejamento, Avaliação e Síntese de Fármacos, LABSINFA, Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco, Rua Prof. Artur Sa, S/N, CDU, Recife, Pernambuco, Brazil.
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43
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Dondoni A, Massi A, Sabbatini S. Multiple Component Approaches to C-Glycosyl β-Amino Acids by Complementary One-Pot Mannich-Type and Reformatsky-Type Reactions. Chemistry 2005; 11:7110-25. [PMID: 16224807 DOI: 10.1002/chem.200500823] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The development of new methods for the preparation of C-glycosyl beta-amino acid libraries with chemical and stereochemical diversity levels was investigated and the results are described herein. Two complementary one-pot three-component Mannich-type and Reformatsky-type synthetic strategies have been developed for the construction of chiral 3-amino propanoate fragments (eventually bis-substituted at C-2) directly linked to the anomeric carbon of pyranose and furanose residues. Both methods involved as the initial step the coupling of a sugar aldehyde to p-methoxybenzylamine but differed in the nucleophile (a d(2) synthon equivalent) which was successively added: a ketene silyl acetal (Mannich route) or a bromozinc enolate (Reformatsky route). Individual C-glycosyl beta-amino esters were isolated as single 3R diastereoisomers in fair to excellent yield (60-90%) and their structure assigned by NMR spectroscopy (Riguera protocol) supported by X-ray crystallography. A tentative explanation of the observed stereochemical outcome based on transition-state models is provided. A preliminary study on the synthesis of alpha,alpha-difluoro C-glycosyl beta-amino acids via a more traditional Reformatsky route is also reported.
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Affiliation(s)
- Alessandro Dondoni
- Laboratorio di Chimica Organica, Dipartimento di Chimica, Università di Ferrara, Via L. Borsari 46, 44100 Ferrara, Italy.
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44
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Pace A, Buscemi S, Vivona N. THE SYNTHESIS OF FLUORINATED HETEROAROMATIC COMPOUNDS. PART 1. FIVE-MEMBERED RINGS WITH MORE THAN TWO HETEROATOMS. A REVIEW. ORG PREP PROCED INT 2005. [DOI: 10.1080/00304940509354978] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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45
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Chapter 5.7 Five-Membered ring systems with O & N Atoms. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0959-6380(05)80053-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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