1
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Jin L, Li Y, Mao Y, He XB, Lu Z, Zhang Q, Shi BF. Chiral dinitrogen ligand enabled asymmetric Pd/norbornene cooperative catalysis toward the assembly of C-N axially chiral scaffolds. Nat Commun 2024; 15:4908. [PMID: 38851721 PMCID: PMC11162495 DOI: 10.1038/s41467-024-48582-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 05/07/2024] [Indexed: 06/10/2024] Open
Abstract
C - N axially chiral compounds have recently attracted significant interest among synthetic chemistry community due to their widespread application in pharmaceuticals, advanced materials and organic synthesis. Although the emerging asymmetric Catellani reaction offers great opportunity for their modular and efficient preparation, the only operative chiral NBE strategy to date requires using half stoichiometric amount of chiral NBE and 2,6-disubstituted bromoarenes as electrophiles. We herein report an efficient assembly of C-N axially chiral scaffolds through a distinct chiral ligand strategy. The crucial chiral source, a biimidazoline (BiIM) chiral dinitrogen ligand, is used in relatively low loading and permits the use of less bulky bromoarenes. The method also features the use of feedstock plain NBE, high reactivity, good enantioselectivity, ease of operation and scale-up. Applications in the preparation of chiral optoelectronic material candidates featuring two C-N chiral axes and a chiral ligand for asymmetric C-H activation have also been demonstrated.
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Affiliation(s)
- Liang Jin
- Department of Chemistry, Zhejiang University, Hangzhou, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Ya Li
- Department of Chemistry, Zhejiang University, Hangzhou, China
| | - Yihui Mao
- Department of Chemistry, Zhejiang University, Hangzhou, China
| | - Xiao-Bao He
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Zhan Lu
- Department of Chemistry, Zhejiang University, Hangzhou, China
| | - Qi Zhang
- Department of Chemistry, Zhejiang University, Hangzhou, China.
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China.
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou, China.
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2
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Sun Y, Sun L, Zhang S, Zhang Z, Wang T. Synthesis of C-N Axially Chiral N-Arylbenzo[ g]indoles via a Central-to-Axial Chirality Conversion Strategy. Org Lett 2024. [PMID: 38780223 DOI: 10.1021/acs.orglett.4c01576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Gold-catalyzed cascade cyclization of diynes for the synthesis of previously unexplored C-N axially chiral N-arylbenzo[g]indoles was described. The transformation was achieved via a central-to-axial chirality conversion strategy. The chiral conversion exhibited high efficiency. Besides single C-N chiral axis, N-arylbenzo[g]indoles bearing both C-N and C-C chiral axes were also afforded. The title compound derived monophosphine ligand was prepared and was evaluated in Pd-catalyzed asymmetric allylic substitutions, showing excellent chiral induction ability.
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Affiliation(s)
- Yuan Sun
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, 710119 Shaanxi Province, China
| | - Lingzhi Sun
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, 710119 Shaanxi Province, China
| | - Shaoting Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, 710119 Shaanxi Province, China
| | - Zunting Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, 710119 Shaanxi Province, China
| | - Tao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, 710119 Shaanxi Province, China
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3
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Kammeraad JA, Das S, Argüelles AJ, Sayyed FB, Zimmerman PM. Conformational Sampling over Transition-Metal-Catalyzed Reaction Pathways: Toward Revealing Atroposelectivity. Org Lett 2024; 26:2867-2871. [PMID: 38241482 PMCID: PMC11135461 DOI: 10.1021/acs.orglett.3c04047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2024]
Abstract
The Py-Conformational-Sampling (PyCoSa) technique is introduced as a systematic computational means to sample the configurational space of transition-metal-catalyzed stereoselective reactions. When applied to atroposelective Suzuki-Miyaura coupling to create axially chiral biaryl products, the results show a range of mechanistic possibilities that include multiple low-energy channels through which C-C bonds can be formed.
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Affiliation(s)
- Joshua A Kammeraad
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Soumik Das
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Alonso J Argüelles
- Synthetic Molecule Design and Development, Eli Lilly, Eli Lilly, Indianapolis, Indiana 46221, United States
| | - Fareed Bhasha Sayyed
- Synthetic Molecule Design and Development, Eli Lilly Services India Pvt Ltd, Devarabeesanahalli, Bengaluru, Karnataka 560103, India
| | - Paul M Zimmerman
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
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4
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Castro-Falcón G, Straetener J, Bornikoel J, Reimer D, Purdy TN, Berscheid A, Schempp FM, Liu DY, Linington RG, Brötz-Oesterhelt H, Hughes CC. Antibacterial Marinopyrroles and Pseudilins Act as Protonophores. ACS Chem Biol 2024; 19:743-752. [PMID: 38377384 PMCID: PMC10949930 DOI: 10.1021/acschembio.3c00773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 12/27/2023] [Indexed: 02/22/2024]
Abstract
Elucidating the mechanism of action (MoA) of antibacterial natural products is crucial to evaluating their potential as novel antibiotics. Marinopyrroles, pentachloropseudilin, and pentabromopseudilin are densely halogenated, hybrid pyrrole-phenol natural products with potent activity against Gram-positive bacterial pathogens like Staphylococcus aureus. However, the exact way they exert this antibacterial activity has not been established. In this study, we explore their structure-activity relationship, determine their spatial location in bacterial cells, and investigate their MoA. We show that the natural products share a common MoA based on membrane depolarization and dissipation of the proton motive force (PMF) that is essential for cell viability. The compounds show potent protonophore activity but do not appear to destroy the integrity of the cytoplasmic membrane via the formation of larger pores or interfere with the stability of the peptidoglycan sacculus. Thus, our current model for the antibacterial MoA of marinopyrrole, pentachloropseudilin, and pentabromopseudilin stipulates that the acidic compounds insert into the membrane and transport protons inside the cell. This MoA may explain many of the deleterious biological effects in mammalian cells, plants, phytoplankton, viruses, and protozoans that have been reported for these compounds.
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Affiliation(s)
- Gabriel Castro-Falcón
- Center
for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, California 92093, United States
| | - Jan Straetener
- Department
of Microbial Bioactive Compounds, Interfaculty Institute of Microbiology
and Infection Medicine, University of Tübingen, Tübingen 72076, Germany
| | - Jan Bornikoel
- Department
of Microbial Bioactive Compounds, Interfaculty Institute of Microbiology
and Infection Medicine, University of Tübingen, Tübingen 72076, Germany
| | - Daniela Reimer
- Center
for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, California 92093, United States
| | - Trevor N. Purdy
- Center
for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, California 92093, United States
| | - Anne Berscheid
- Department
of Microbial Bioactive Compounds, Interfaculty Institute of Microbiology
and Infection Medicine, University of Tübingen, Tübingen 72076, Germany
| | - Florence M. Schempp
- Center
for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, California 92093, United States
| | - Dennis Y. Liu
- Department
of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Roger G. Linington
- Department
of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Heike Brötz-Oesterhelt
- Department
of Microbial Bioactive Compounds, Interfaculty Institute of Microbiology
and Infection Medicine, University of Tübingen, Tübingen 72076, Germany
- Cluster
of Excellence EXC 2124: Controlling Microbes to Fight Infection, University of Tübingen, Tübingen 72076, Germany
- German
Center for Infection Research, Partner Site Tübingen, Tübingen 72076, Germany
| | - Chambers C. Hughes
- Center
for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, California 92093, United States
- Department
of Microbial Bioactive Compounds, Interfaculty Institute of Microbiology
and Infection Medicine, University of Tübingen, Tübingen 72076, Germany
- Cluster
of Excellence EXC 2124: Controlling Microbes to Fight Infection, University of Tübingen, Tübingen 72076, Germany
- German
Center for Infection Research, Partner Site Tübingen, Tübingen 72076, Germany
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5
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Parida C, Pan SC. Organocatalytic Synthesis of Furan-Embedded Styrene Atropisomers. J Org Chem 2023; 88:13358-13370. [PMID: 37675791 DOI: 10.1021/acs.joc.3c01391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Herein, we report the first synthesis of furan-embedded styrene atropisomers via the reaction between 1-(aryl-ethynyl)-naphthalen-2-ol and γ-hydroxyenone. The reaction proceeds through in situ furan formation from γ-hydroxyenone. The styrene derivatives were obtained in moderate to good yields with high diastereoselectivities with a catalytic amount of PTSA. Few applications such as triazole formation and cross-coupling reactions have been demonstrated. A preliminary catalytic asymmetric version was also reported.
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Affiliation(s)
- Chandrakanta Parida
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
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6
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Zeng L, Zhang F, Cui S. Construction of Axial Chirality via Click Chemistry: Rh-Catalyzed Enantioselective Synthesis of 1-Triazolyl-2-Naphthylamines. Org Lett 2023; 25:443-448. [PMID: 36627257 DOI: 10.1021/acs.orglett.2c04247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A modular and practical click chemistry for atroposelective synthesis of 1-triazolyl-2-naphthylamines is developed. In this protocol, a variety of aromatic or aliphatic azides, and 1-alkynyl-2-naphthylamines could be assembled into valuable 1-triazlyl-2-naphthylamine scaffolds via a [3 + 2] cycloaddition under Rh-catalysis. This asymmetric click technology features easily accessible starting materials, mild reaction conditions, facile scalability, and good enantioselectivity. The good thermostability of products showcases great applicable potential, and the synthetic transformations further expand the molecular diversity of atropisomers.
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Affiliation(s)
- Linwei Zeng
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Fengzhi Zhang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.,School of Pharmacy, Hangzhou Medical College, Hangzhou 310013, China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
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7
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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8
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Liu C, Yamamura H, Hayakawa M, Zhang Z, Oku N, Igarashi Y. Plant growth-promoting and antimicrobial chloropyrroles from a rare actinomycete of the genus Catellatospora. J Antibiot (Tokyo) 2022; 75:655-661. [PMID: 36195750 DOI: 10.1038/s41429-022-00567-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/08/2022] [Accepted: 09/11/2022] [Indexed: 11/08/2022]
Abstract
Two new chloropyrroles, designated catellatopyrroles A (1) and B (2), along with 2-(2'-hydroxybenzoyl)pyrrole (3), were isolated from a culture extract of an actinomycete of the genus Catellatospora. The structures of 1-3 were elucidated through interpretation of NMR and MS data. Compounds 1 and 2 are the first chloropyrroles substituted by an aliphatic acyl group at the 5-position. Compounds 1-3 promoted root elongation of germinated lettuce seeds at 1-10 μM. While all compounds inhibited the growth of Gram-positive bacteria, activity against Gram-negative bacterium Rhizobium radiobacter and yeasts Candida albicans and Saccharomyces cerevisiae was varied. Compounds 1 and 2 were moderately cytotoxic against P388 cells.
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Affiliation(s)
- Chang Liu
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan
| | - Hideki Yamamura
- Department of Biotechnology, Faculty of Life and Environmental Sciences, University of Yamanashi, 4-4-37 Takeda, Kofu, 400-8510, Yamanashi, Japan
| | - Masayuki Hayakawa
- Department of Biotechnology, Faculty of Life and Environmental Sciences, University of Yamanashi, 4-4-37 Takeda, Kofu, 400-8510, Yamanashi, Japan
- Yamanashi Prefectural University, Iida 5-11-1, Kofu, Yamanashi, 400-0035, Japan
| | - Zhiwei Zhang
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan
| | - Naoya Oku
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan
| | - Yasuhiro Igarashi
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan.
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9
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Wang G, Huang J, Zhang L, Han J, Zhang X, Huang J, Fu Z, Huang W. N-heterocyclic carbene-catalyzed atroposelective synthesis of axially chiral 5-aryl 2-pyrones from enals. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1327-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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10
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Xiao Y, Yang J, Zou L, Wu P, Li W, Yan Y, Li Y, Li S, Song H, Zhong W, Qin Y. Synthesis of 10,10′-bis(trifluoromethyl) marinopyrrole A derivatives and evaluation of their antiviral activities in vitro. Eur J Med Chem 2022; 238:114436. [DOI: 10.1016/j.ejmech.2022.114436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/28/2022] [Accepted: 04/29/2022] [Indexed: 11/26/2022]
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11
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Zhu L, Peng H, Guo Y, Che J, Wu JH, Su Z, Wang T. Enantioselective Synthesis of Atropisomeric Biaryl Phosphorus Compounds by Chiral-Phosphonium-Salt-Enabled Cascade Arene Formation. Angew Chem Int Ed Engl 2022; 61:e202202467. [PMID: 35548922 DOI: 10.1002/anie.202202467] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Indexed: 01/26/2023]
Abstract
Axially chiral biaryl monophosphorus molecules, exemplified by atropisomeric 1,1'-biaryl aminophosphines, are significant motifs in numerous chiral ligands/catalysts. Developing efficient methods for preparing phosphorus compounds with these privileged motifs is an important endeavor in synthetic chemistry. Herein, we develop an effective, modular method by a chiral-phosphonium-salt-catalyzed novel cascade between phosphorus-containing nitroolefins and α,α-dicyanoolefins, leading to a great diversity of atropisomeric biaryls bearing phosphorus groups in high yields with excellent stereoselectivities. The reaction features include a Thorpe-type cycloaddition/oxidative hydroxylation/aromatization cascade pathway with a central-to-axial chirality transfer process. Insight gained from our studies is expected to advance general efforts towards the catalytic synthesis of atropisomeric biaryl phosphorus compounds, offering a platform for developing new efficient chiral ligands and catalysts.
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Affiliation(s)
- Lixiang Zhu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Heling Peng
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China.,Medical Administration Department, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, 610072, P. R. China
| | - Yan Guo
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Jixing Che
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Jia-Hong Wu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
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12
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Marine Actinobacteria a New Source of Antibacterial Metabolites to Treat Acne Vulgaris Disease—A Systematic Literature Review. Antibiotics (Basel) 2022; 11:antibiotics11070965. [PMID: 35884220 PMCID: PMC9311749 DOI: 10.3390/antibiotics11070965] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 02/04/2023] Open
Abstract
Acne vulgaris is a multifactorial disease that remains under-explored; up to date it is known that the bacterium Cutibacterium acnes is involved in the disease occurrence, also associated with a microbial dysbiosis. Antibiotics have become a mainstay treatment generating the emergence of antibiotic-resistant bacteria. In addition, there are some reported side effects of alternative treatments, which indicate the need to investigate a different therapeutic approach. Natural products continue to be an excellent option, especially those extracted from actinobacteria, which represent a prominent source of metabolites with a wide range of biological activities, particularly the marine actinobacteria, which have been less studied than their terrestrial counterparts. Therefore, this systematic review aimed to identify and evaluate the potential anti-infective activity of metabolites isolated from marine actinobacteria strains against bacteria related to the development of acne vulgaris disease. It was found that there is a variety of compounds with anti-infective activity against Staphylococcus aureus and Staphylococcus epidermidis, bacteria closely related to acne vulgaris development; nevertheless, there is no report of a compound with antibacterial activity or quorum-sensing inhibition toward C. acnes, which is a surprising result. Since two of the most widely used antibiotics for the treatment of acne targeting C. acnes were obtained from actinobacteria of the genus Streptomyces, this demonstrates a great opportunity to pursue further studies in this field, considering the potential of marine actinobacteria to produce new anti-infective compounds.
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13
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Zhu L, Peng H, Guo Y, Che J, Wu J, Su Z, Wang T. Enantioselective Synthesis of Atropisomeric Biaryl Phosphorus Compounds by Chiral‐Phosphonium‐Salt‐Enabled Cascade Arene Formation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Lixiang Zhu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Heling Peng
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
- Medical Administration Department Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital Chengdu 610072 P. R. China
| | - Yan Guo
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Jixing Che
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Jia‐Hong Wu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 P. R. China
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14
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Zhao Y, Liu N, Zhong S, Wen Z, Wang T. A Central-to-Axial Chirality Conversion Strategy for the Synthesis of C-N Axially Chiral N-Arylpyrroles. Org Lett 2022; 24:2842-2846. [PMID: 35412320 DOI: 10.1021/acs.orglett.2c00753] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We present a central-to-axial chirality conversion strategy for the construction of C-N axially chiral N-arylpyrroles via a gold(I)-catalyzed 5-endo-dig cyclization/dehydration cascade from amino acid derivatives. The reaction exhibits high efficiency on the central-to-axial chirality conversion. Density functional theory calculations suggest that the stereospecificity during the central-to-axial chirality conversion lies in the stability of the conformations of the amino alcohol and the corresponding low barrier transition state.
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Affiliation(s)
- Yuan Zhao
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, Shaanxi 710119, China
| | - Ningning Liu
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, Shaanxi 710119, China
| | - Shiping Zhong
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, Shaanxi 710119, China
| | - Ziwei Wen
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, Shaanxi 710119, China
| | - Tao Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, Shaanxi 710119, China
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15
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Dai DT, Yang MW, Chen ZY, Wang ZL, Xu YH. Chelation-Controlled Stereospecific Cross-Coupling Reaction between Alkenes for Atroposelective Synthesis of Axially Chiral Conjugated Dienes. Org Lett 2022; 24:1979-1984. [DOI: 10.1021/acs.orglett.2c00386] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Dong-Ting Dai
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Meng-Wei Yang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhi-Yuan Chen
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zi-Lu Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yun-He Xu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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16
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Qiu Z, Wu Y, Lan K, Wang S, Yu H, Wang Y, Wang C, Cao S. Cytotoxic compounds from marine actinomycetes: Sources, Structures and Bioactivity. ACTA MATERIA MEDICA 2022; 1:445-475. [PMID: 36588746 PMCID: PMC9802659 DOI: 10.15212/amm-2022-0028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Marine actinomycetes produce a substantial number of natural products with cytotoxic activity. The strains of actinomycetes were isolated from different sources like fishes, coral, sponges, seaweeds, mangroves, sediments etc. These cytotoxic compounds can be categorized briefly into four classes: polyketides, non-ribosomal peptides and hybrids, isoprenoids and hybrids, and others, among which majority are polyketides (146). Twenty two out of the 254 compounds showed potent cytotoxicity with IC50 values at ng/mL or nM level. This review highlights the sources, structures and antitumor activity of 254 natural products isolated from marine actinomycetes, which were new when they were reported from 1989 to 2020.
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Affiliation(s)
- Ziyan Qiu
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Yinshuang Wu
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Kunyan Lan
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Shiyi Wang
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Huilin Yu
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Yufei Wang
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
| | - Cong Wang
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China,Correspondence: (C.W.); (S.C.)
| | - Shugeng Cao
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai’i at Hilo, 200 W. Kawili St., Hilo, HI 96720, USA,Correspondence: (C.W.); (S.C.)
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17
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Nguyen Tien TA, Miliutina M, Radolko J, Thom R, Dang TT, Ehlers P, Langer P. Synthesis of chromeno[2,3-c]pyrrol-9(2H)-ones by domino Michael-Claisen-SNAr reactions of amino acid esters with 2-chlorophenylpropynones. Tetrahedron 2022. [DOI: 10.1016/j.tet.2021.132608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Song R, Xie Y, Jin Z, Chi YR. Carbene‐Catalyzed Asymmetric Construction of Atropisomers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108630] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Runjiang Song
- Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Yongtao Xie
- International Joint Research Center for Molecular Science College of Chemistry and Environmental Engineering College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
- Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Zhichao Jin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Guizhou University Guiyang 550025 China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Guizhou University Guiyang 550025 China
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19
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Adak S, Moore BS. Cryptic halogenation reactions in natural product biosynthesis. Nat Prod Rep 2021; 38:1760-1774. [PMID: 34676862 DOI: 10.1039/d1np00010a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Covering: Up to December 2020Enzymatic halogenation reactions are essential for the production of thousands of halogenated natural products. However, in recent years, scientists discovered several halogenases that transiently incorporate halogen atoms in intermediate biosynthetic molecules to activate them for further chemical reactions such as cyclopropanation, terminal alkyne formation, C-/O-alkylation, biaryl coupling, and C-C rearrangements. In each case, the halogen atom is lost in the course of biosynthesis to the final product and is hence termed "cryptic". In this review, we provide an overview of our current knowledge of cryptic halogenation reactions in natural product biosynthesis.
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Affiliation(s)
- Sanjoy Adak
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California, 92093, USA.
| | - Bradley S Moore
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California, 92093, USA. .,Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California 92093, USA
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20
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Seipp K, Geske L, Opatz T. Marine Pyrrole Alkaloids. Mar Drugs 2021; 19:514. [PMID: 34564176 PMCID: PMC8471394 DOI: 10.3390/md19090514] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/05/2021] [Accepted: 09/07/2021] [Indexed: 12/13/2022] Open
Abstract
Nitrogen heterocycles are essential parts of the chemical machinery of life and often reveal intriguing structures. They are not only widespread in terrestrial habitats but can also frequently be found as natural products in the marine environment. This review highlights the important class of marine pyrrole alkaloids, well-known for their diverse biological activities. A broad overview of the marine pyrrole alkaloids with a focus on their isolation, biological activities, chemical synthesis, and derivatization covering the decade from 2010 to 2020 is provided. With relevant structural subclasses categorized, this review shall provide a clear and timely synopsis of this area.
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Affiliation(s)
| | | | - Till Opatz
- Department of Chemistry, Organic Chemistry Section, Johannes Gutenberg University, Duesbergweg 10–14, 55128 Mainz, Germany; (K.S.); (L.G.)
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21
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A new and efficient approach to 2-hydroxybenzophenone derivatives via [5C + 1C] annulation of α-alkenoyl-α-aroyl ketene dithioacetals and nitroalkanes. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132427] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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22
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Vroemans R, Ribone SR, Thomas J, Van Meervelt L, Ollevier T, Dehaen W. Synthesis of homochiral sulfanyl- and sulfoxide-substituted naphthyltriazoles and study of the conformational stability. Org Biomol Chem 2021; 19:6521-6526. [PMID: 34254109 DOI: 10.1039/d1ob00784j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The preparation of a series of novel homochiral atropisomeric sulfanyl- and sulfoxide-substituted naphthyltriazoles is described. The triazolization methodology used presents a new way towards novel and highly stable 1,2,3-triazole-based atropisomers, and introduces a new and complementary synthetic pathway towards 4-sulfanyl substituted 1,2,3-triazoles. Starting from sulfanyl-substituted naphthyl ketones, enantiopure amines, and 4-nitrophenyl azide, a collection of 16 sulfanyl-substituted naphthyltriazoles were obtained via the triazolization reaction in which the homochiral diastereomers are readily isolated. Subsequent monooxidation results in the preparation of several sulfoxide-substituted naphthyltriazoles. The absolute configuration of a set of diastereomeric sulfanyl- and sulfoxide-appended naphthyltriazoles was deduced via X-ray crystallography. Furthermore, the conformational stability of the atropisomers was determined experimentally, and further confirmed and analyzed with the aid of computational DFT calculations.
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Affiliation(s)
- Robby Vroemans
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Sergio R Ribone
- Unidad de Investigación y Desarrollo en Tecnología Farmacéutica (UNITEFA, CONICET), Dpto. Ciencias Farmacéuticas, Fac. Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba X5000HUA, Argentina
| | - Joice Thomas
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Luc Van Meervelt
- Biochemistry, Molecular and Structural Biology, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Thierry Ollevier
- Département de chimie, Pavillon Alexandre-Vachon, Université Laval, 1045 avenue de la Médecine, Québec, QC G1V 0A6, Canada
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
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23
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Song R, Xie Y, Jin Z, Chi YR. Carbene-Catalyzed Asymmetric Construction of Atropisomers. Angew Chem Int Ed Engl 2021; 60:26026-26037. [PMID: 34270158 DOI: 10.1002/anie.202108630] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Indexed: 11/05/2022]
Abstract
Atropisomeric molecules have found proven applications and have shown promising potential in chemistry and medicine. The design of N-heterocyclic carbene (NHC) catalyzed reactions to construct atropisomerically enriched molecules has emerged as an important research topic in recent years. These reactions include kinetic resolutions, asymmetric desymmetrizations, central-to-axial chirality conversions, and cycloadditions. This Minireview evaluates and summarizes the progress in NHC-based organic catalysis for access to atropisomers, and briefly states our personal perspectives on the future advancement of this topic. NHC catalysis has provided rich and unique reaction modes that have led to success in the asymmetric synthesis of central-chiral molecules. It is expected that similar success could also be achieved in developing NHC catalysis to prepare atropisomeric molecules, including those not easily accessible by other methods.
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Affiliation(s)
- Runjiang Song
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Yongtao Xie
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China.,Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Zhichao Jin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.,State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
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24
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Wang C, Du W, Lu H, Lan J, Liang K, Cao S. A Review: Halogenated Compounds from Marine Actinomycetes. Molecules 2021; 26:2754. [PMID: 34067123 PMCID: PMC8125187 DOI: 10.3390/molecules26092754] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 05/02/2021] [Accepted: 05/03/2021] [Indexed: 11/17/2022] Open
Abstract
Marine actinomycetes, Streptomyces species, produce a variety of halogenated compounds with diverse structures and a range of biological activities owing to their unique metabolic pathways. These halogenated compounds could be classified as polyketides, alkaloids (nitrogen-containing compounds) and terpenoids. Halogenated compounds from marine actinomycetes possess important biological properties such as antibacterial and anticancer activities. This review reports the sources, chemical structures and biological activities of 127 new halogenated compounds originated mainly from Streptomyces reported from 1992 to 2020.
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Affiliation(s)
- Cong Wang
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China; (W.D.); (H.L.); (J.L.); (K.L.)
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai’i at Hilo, Hilo, HI 96720, USA
| | - Weisheng Du
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China; (W.D.); (H.L.); (J.L.); (K.L.)
| | - Huanyun Lu
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China; (W.D.); (H.L.); (J.L.); (K.L.)
| | - Jianzhou Lan
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China; (W.D.); (H.L.); (J.L.); (K.L.)
| | - Kailin Liang
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China; (W.D.); (H.L.); (J.L.); (K.L.)
| | - Shugeng Cao
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai’i at Hilo, Hilo, HI 96720, USA
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25
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Cheng JK, Xiang SH, Li S, Ye L, Tan B. Recent Advances in Catalytic Asymmetric Construction of Atropisomers. Chem Rev 2021; 121:4805-4902. [PMID: 33775097 DOI: 10.1021/acs.chemrev.0c01306] [Citation(s) in RCA: 360] [Impact Index Per Article: 120.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Atropisomerism is a stereochemical behavior portrayed by three-dimensional molecules that bear rotationally restricted σ bond. Akin to the well-represented point-chiral molecules, atropisomerically chiral compounds are finding increasing utilities in many disciplines where molecular asymmetry is influential. This provides steady demand on atroposelective synthesis, where numerous synthetic pursuits have been rewarded with conceptually novel and streamlined methods while expanding the structural diversity of atropisomers. This review summarizes key achievements in stereoselective preparation of biaryl, heterobiaryl, and nonbiaryl atropisomers documented between 2015 and 2020. Emphasis is placed on the synthetic strategies for each structural class, while examples are cited to illustrate the potential applications of the accessed atropochiral targets.
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Affiliation(s)
- Jun Kee Cheng
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shao-Hua Xiang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shaoyu Li
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Liu Ye
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bin Tan
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China
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26
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Guo Y, Yang R, Chen F, Yan T, Wen T, Li F, Su X, Wang L, Du J, Liu J. Triphenyl-sesquineolignan analogues derived from Illicium simonsii Maxim exhibit potent antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) by disrupting bacterial membranes. Bioorg Chem 2021; 110:104824. [PMID: 33773225 DOI: 10.1016/j.bioorg.2021.104824] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 02/18/2021] [Accepted: 03/08/2021] [Indexed: 12/12/2022]
Abstract
Infections caused by clinical methicillin-resistant Staphylococcus aureus (MRSA) are a serious public problem. Triphenyl-sesquineolignans from Illicium genus possess antibacterial activity, but few researches have reported their antibacterial spectrums, structure-activity relationships (SARs) and antibacterial mechanism. In this study, three triphenyl-sesquineolignans, dunnianol (1), macranthol (2) and isodunnianol (3) were isolated from the stems and leaves of I. simonsii Maxim, and seven dunnianol derivatives were prepared through esterification, etherification and halogenation reactions. Among all triphenyl-sesquineolignan analogues, compound 6 showed the best antibacterial activity against four Gram-positive bacteria (MICs = 1-2 µg/mL) and ten clinical MRSA strains (MICs = 2-8 µg/mL), and also exhibited characteristics of killing MRSA more rapidly than tigecycline. Meanwhile, compound 6 did not only show a low probability of drug resistance development, but also exhibited relatively low hemolysis, and good stability in 50% plasma. Further mechanism studies revealed that 6 could kill bacterial strains by disrupting bacterial membranes. These results suggested that 6 may be developed into a new antibacterial candidate for combating MRSA infections.
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Affiliation(s)
- Yong Guo
- School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China.
| | - Ruige Yang
- School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China
| | - Fangfang Chen
- School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China
| | - Tingting Yan
- School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China
| | - Tingyu Wen
- School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China
| | - Fang Li
- School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China; School of Science, Xuchang University, Xuchang, Henan Province 461000, People's Republic of China
| | - Xiaoyu Su
- School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China
| | - Lei Wang
- School of Science, Xuchang University, Xuchang, Henan Province 461000, People's Republic of China
| | - Juan Du
- School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China
| | - Jifeng Liu
- School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, Henan Province, People's Republic of China.
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27
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Patel A, Shah H, Shah U, Bambharoliya T, Patel M, Panchal I, Parikh V, Nagani A, Patel H, Vaghasiya J, Solanki N, Patel S, Shah A, Parmar G. A Review on the Synthetic Approach of Marinopyrroles: A Natural Antitumor Agent from the Ocean. LETT ORG CHEM 2021. [DOI: 10.2174/1570178617999200718004012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Natural products play an important role in various drug discovery and development approaches.
They are known to be the rich resources for the identification of new chemical entities
(NCEs) intended to treat various diseases. Many drugs have been discovered and developed from natural
sources. Indeed, collaborative efforts involving biologists as well as organic, medicinal, and phytochemists
usually facilitate the identification of potent NCEs derived from natural sources. Over the past
20 years, more than 50% of NCEs have been derived either from marine sources or synthetic/
semisynthetic derivatives of natural products. Indeed, many drug molecules have been designed by
considering natural products as the starting scaffold. The first bis-pyrrole alkaloid derivative of
marinopyrroles was obtained from the marine-derived streptomycete species. In the laboratory, it can
be synthesized via Clauson-Kaas and Friedel-Crafts arylation as well as copper-mediated N-arylation
process under microwave irradiation. The marinopyrrole A (±)-28 was discovered to overcome resistance
against human cancer cells by antagonizing B-cell lymphoma extra-large (Bcl-xL) and induced
myeloid leukaemia cell (Mcl-1). In this review, we elaborated on various synthetic pathways of
marinopyrroles possessing anti-cancer potential, which could encourage researchers to discover promising
anti-tumor agents.
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Affiliation(s)
- Ashish Patel
- Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology, Changa, Ta. Petlad, Dist. Anand, Gujarat,India
| | - Hirak Shah
- Parul Institute of Pharmacy, Parul University, Vadodara, Gujarat,India
| | - Umang Shah
- Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology, Changa, Ta. Petlad, Dist. Anand, Gujarat,India
| | | | - Mehul Patel
- Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology, Changa, Ta. Petlad, Dist. Anand, Gujarat,India
| | - Ishan Panchal
- Parul Institute of Pharmacy, Parul University, Vadodara, Gujarat,India
| | - Vruti Parikh
- Parul Institute of Pharmacy, Parul University, Vadodara, Gujarat,India
| | - Afzal Nagani
- Parul Institute of Pharmacy, Parul University, Vadodara, Gujarat,India
| | - Harnisha Patel
- Parul Institute of Pharmacy, Parul University, Vadodara, Gujarat,India
| | | | - Nilay Solanki
- Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology, Changa, Ta. Petlad, Dist. Anand, Gujarat,India
| | - Swayamprakash Patel
- Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology, Changa, Ta. Petlad, Dist. Anand, Gujarat,India
| | - Ashish Shah
- Department of Pharmacy, Sumandeep Vidhyapeeth, Vadodara, Gujarat,India
| | - Ghanshyam Parmar
- Department of Pharmacy, Sumandeep Vidhyapeeth, Vadodara, Gujarat,India
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28
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Hughes CC. Chemical labeling strategies for small molecule natural product detection and isolation. Nat Prod Rep 2021; 38:1684-1705. [PMID: 33629087 DOI: 10.1039/d0np00034e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Covering: Up to 2020.It is widely accepted that small molecule natural products (NPs) evolved to carry out a particular ecological function and that these finely-tuned molecules can sometimes be appropriated for the treatment of disease in humans. Unfortunately, for the natural products chemist, NPs did not evolve to possess favorable physicochemical properties needed for HPLC-MS analysis. The process known as derivatization, whereby an NP in a complex mixture is decorated with a nonnatural moiety using a derivatizing agent (DA), arose from this sad state of affairs. Here, NPs are freed from the limitations of natural functionality and endowed, usually with some degree of chemoselectivity, with additional structural features that make HPLC-MS analysis more informative. DAs that selectively label amines, carboxylic acids, alcohols, phenols, thiols, ketones, and aldehydes, terminal alkynes, electrophiles, conjugated alkenes, and isocyanides have been developed and will be discussed here in detail. Although usually employed for targeted metabolomics, chemical labeling strategies have been effectively applied to uncharacterized NP extracts and may play an increasing role in the detection and isolation of certain classes of NPs in the future.
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Affiliation(s)
- Chambers C Hughes
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany 72076.
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29
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Paul CE, Eggerichs D, Westphal AH, Tischler D, van Berkel WJH. Flavoprotein monooxygenases: Versatile biocatalysts. Biotechnol Adv 2021; 51:107712. [PMID: 33588053 DOI: 10.1016/j.biotechadv.2021.107712] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/27/2021] [Accepted: 02/06/2021] [Indexed: 12/13/2022]
Abstract
Flavoprotein monooxygenases (FPMOs) are single- or two-component enzymes that catalyze a diverse set of chemo-, regio- and enantioselective oxyfunctionalization reactions. In this review, we describe how FPMOs have evolved from model enzymes in mechanistic flavoprotein research to biotechnologically relevant catalysts that can be applied for the sustainable production of valuable chemicals. After a historical account of the development of the FPMO field, we explain the FPMO classification system, which is primarily based on protein structural properties and electron donor specificities. We then summarize the most appealing reactions catalyzed by each group with a focus on the different types of oxygenation chemistries. Wherever relevant, we report engineering strategies that have been used to improve the robustness and applicability of FPMOs.
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Affiliation(s)
- Caroline E Paul
- Biocatalysis, Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Daniel Eggerichs
- Microbial Biotechnology, Faculty of Biology and Biotechnology, Ruhr-Universität Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - Adrie H Westphal
- Laboratory of Biochemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Dirk Tischler
- Microbial Biotechnology, Faculty of Biology and Biotechnology, Ruhr-Universität Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - Willem J H van Berkel
- Laboratory of Food Chemistry, Wageningen University, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands.
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30
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Kitagawa O. Chiral Pd-Catalyzed Enantioselective Syntheses of Various N-C Axially Chiral Compounds and Their Synthetic Applications. Acc Chem Res 2021; 54:719-730. [PMID: 33481580 DOI: 10.1021/acs.accounts.0c00767] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Biaryl atropisomers are key structural components in chiral ligands, chiral functional materials, natural products, and bioactive compounds, and their asymmetric syntheses have been reported by many groups. In contrast, although the scientific community has long been aware of atropisomers due to rotational restriction around N-C bonds, they have attracted scant attention and have remained an unexplored research area. In particular, their catalytic asymmetric synthesis and the synthetic applications were unknown until recently. This Account describes studies conducted by our group on the catalytic enantioselective syntheses of N-C axially chiral compounds and their applications in asymmetric reactions.In the presence of a chiral Pd catalyst, the reactions of achiral secondary ortho-tert-butylanilides with 4-iodonitrobenzene proceeded in a highly enantioselective manner (up to 96% ee), affording N-C axially chiral N-arylated ortho-tert-butylanilides in good yields. The application of the present chiral Pd-catalyzed N-arylation reaction to an intramolecular version gave N-C axially chiral lactams with high optical purity (up to 98% ee). These reactions were the first highly enantioselective syntheses of N-C axially chiral compounds with a chiral catalyst. Since the publication of these reactions, N-C axially chiral compounds have been widely accepted as new target molecules for catalytic asymmetric reactions. Furthermore, chiral-Pd-catalyzed intramolecular N-arylations were applied to the enantioselective syntheses of N-C axially chiral quinoline-4-one and phenanthridin-6-one derivatives. We also succeeded in the enantioselective syntheses of various N-C axially chiral compounds using other chiral Pd-catalyzed reactions. That is, optically active N-C axially chiral N-(2-tert-butylphenyl)indoles, 3-(2-bromophenyl)quinazolin-4-ones, and N-(2-tert-butylphenyl)sulfonamides were obtained through chiral Pd-catalyzed 5-endo-hydroaminocyclization, monohydrodebromination (reductive asymmetric desymmetrization), and Tsuji-Trost N-allylation, respectively. The study of the catalytic asymmetric synthesis of axially chiral indoles has contributed to the development of not only N-C axially chiral chemistry but also the chemistry of axially chiral indoles. Subsequently, the catalytic asymmetric syntheses of various indole derivatives bearing a C-C chiral axis as well as an N-C chiral axis have been reported by many groups. Moreover, axially chiral quinazlolin-4-one derivatives, which were obtained through chiral Pd-catalyzed asymmetric desymmetrization, are pharmaceutically attractive compounds; for example, 2-methyl-3-(2-bromophenyl)quinazolin-4-one product is a mebroqualone possessing GABA agonist activity.Most of the N-C axially chiral products have satisfactory rotational stability for synthetic applications, and their synthetic utility was also demonstrated through application to chiral enolate chemistry. That is, the reaction of various alkyl halides with the enolate prepared from the optically active anilide, lactam, and quinazolinone products proceeded with high diastereoselectivity by asymmetric induction due to the N-C axial chirality.At the present time, N-C axially chiral chemistry has become a popular research area, especially in synthetic organic chemistry, and original papers on the catalytic asymmetric syntheses of various N-C axially chiral compounds and their synthetic applications have been published.
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Affiliation(s)
- Osamu Kitagawa
- Department of Applied Chemistry (Japanese Association of Bio-intelligence for Well-being), Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan
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Singh N, Singh S, Kohli S, Singh A, Asiki H, Rathee G, Chandra R, Anderson EA. Recent progress in the total synthesis of pyrrole-containing natural products (2011–2020). Org Chem Front 2021. [DOI: 10.1039/d0qo01574a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review discusses total syntheses of pyrrole-containing natural products over the last ten years, highlighting recent advances in the chemistry of pyrroles in the context of their innate reactivity, and their preparation in complex settings.
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Affiliation(s)
- Nidhi Singh
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Snigdha Singh
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Sahil Kohli
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Aarushi Singh
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Hannah Asiki
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Garima Rathee
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Ramesh Chandra
- Department of Chemistry, University of Delhi, Delhi 110007, India
- Dr B. R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi 110007, India
| | - Edward A. Anderson
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
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Marine microbial natural products: the evolution of a new field of science. J Antibiot (Tokyo) 2020; 73:481-487. [PMID: 32713942 DOI: 10.1038/s41429-020-0331-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 05/21/2020] [Indexed: 12/29/2022]
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Wang C, Lu Y, Cao S. Antimicrobial compounds from marine actinomycetes. Arch Pharm Res 2020; 43:677-704. [PMID: 32691395 DOI: 10.1007/s12272-020-01251-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/14/2020] [Indexed: 04/03/2023]
Abstract
Marine actinomycetes were the main origin of marine natural products in the past 40 years. This review was to present the sources, structures and antimicrobial activities of 313 new natural products from marine actinomycetes reported from 1976 to 2019.
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Affiliation(s)
- Cong Wang
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, 200 W. Kawili St., Hilo, HI, 96720, USA.,Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, 530006, China
| | - Yuanyu Lu
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, 530006, China
| | - Shugeng Cao
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, 200 W. Kawili St., Hilo, HI, 96720, USA.
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Varrella S, Tangherlini M, Corinaldesi C. Deep Hypersaline Anoxic Basins as Untapped Reservoir of Polyextremophilic Prokaryotes of Biotechnological Interest. Mar Drugs 2020; 18:md18020091. [PMID: 32019162 PMCID: PMC7074082 DOI: 10.3390/md18020091] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/27/2020] [Accepted: 01/28/2020] [Indexed: 12/18/2022] Open
Abstract
Deep-sea hypersaline anoxic basins (DHABs) are considered to be among the most extreme ecosystems on our planet, allowing only the life of polyextremophilic organisms. DHABs’ prokaryotes exhibit extraordinary metabolic capabilities, representing a hot topic for microbiologists and biotechnologists. These are a source of enzymes and new secondary metabolites with valuable applications in different biotechnological fields. Here, we review the current knowledge on prokaryotic diversity in DHABs, highlighting the biotechnological applications of identified taxa and isolated species. The discovery of new species and molecules from these ecosystems is expanding our understanding of life limits and is expected to have a strong impact on biotechnological applications.
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Affiliation(s)
- Stefano Varrella
- Department of Materials, Environmental Sciences and Urban Planning, Polytechnic University of Marche, 60131 Ancona, Italy;
| | | | - Cinzia Corinaldesi
- Department of Materials, Environmental Sciences and Urban Planning, Polytechnic University of Marche, 60131 Ancona, Italy;
- Correspondence:
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Ram RN, Sadanandan S, Kumar Gupta D. β,β,β‐Trichloroethyl‐
N
H‐Enamine as Viable System for 5‐
Endo‐trig
Radical Cyclization
via
Multifaceted Cu
I
−Cu
II
Redox Catalysis: Single Step Synthesis of Multi‐Functionalized
N
H‐Pyrroles. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900938] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ram N. Ram
- Department of ChemistryIndian Institute of Technology Delhi, Hauz Khas New Delhi 110016 India
| | - Sandhya Sadanandan
- Department of ChemistryAmrita Vishwa Vidyapeetham, Amritapuri Kerala 690525 India
| | - Dharmendra Kumar Gupta
- Department of ChemistryIndian Institute of Technology Delhi, Hauz Khas New Delhi 110016 India
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Pyrrolomycins Are Potent Natural Protonophores. Antimicrob Agents Chemother 2019; 63:AAC.01450-19. [PMID: 31405863 DOI: 10.1128/aac.01450-19] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 07/31/2019] [Indexed: 01/01/2023] Open
Abstract
The escalating burden of antibiotic drug resistance necessitates research into novel classes of antibiotics and their mechanism of action. Pyrrolomycins are a family of potent natural product antibiotics with nanomolar activity against Gram-positive bacteria, yet with an elusive mechanism of action. In this work, we dissect the apparent Gram-positive specific activity of pyrrolomycins and show that Gram-negative bacteria are equally sensitive to pyrrolomycins when drug efflux transporters are removed and that albumin in medium plays a large role in pyrrolomycin activity. The selection of resistant mutants allowed for the characterization and validation of a number of mechanisms of resistance to pyrrolomycins in both Staphylococcus aureus and an Escherichia coli ΔtolC mutant, all of which appear to affect compound penetration rather than being target associated. Imaging of the impact of pyrrolomycin on the E. coli ΔtolC mutant using scanning electron microscopy showed blebbing of the bacterial cell wall often at the site of bacterial division. Using potentiometric probes and an electrophysiological technique with an artificial bilayer lipid membrane, it was demonstrated that pyrrolomycins C and D are very potent membrane-depolarizing agents, an order of magnitude more active than conventional carbonyl cyanide m-chlorophenylhydrazone (CCCP), specifically disturbing the proton gradient and uncoupling oxidative phosphorylation via protonophoric action. This work clearly unveils the until-now-elusive mechanism of action of pyrrolomycins and explains their antibiotic activity as well as mechanisms of innate and acquired drug resistance in bacteria.
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Bioactivities of Halometabolites from Marine Actinobacteria. Biomolecules 2019; 9:biom9060225. [PMID: 31212626 PMCID: PMC6627970 DOI: 10.3390/biom9060225] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 05/27/2019] [Accepted: 05/28/2019] [Indexed: 12/16/2022] Open
Abstract
Natural halogenated compounds (halometabolites) are produced mainly by marine organisms, including marine Actinobacteria. Many commercially important compounds for pharmaceuticals contain halogen, and the halogen is responsible for the physical and chemical properties as well as bioactivities and toxicities. In the exploration of marine environment that is supported by advanced structure elucidation, varied panel bioassays and high-throughput screening have accelerated number of halometabolites isolated from marine Actinobacteria to date. The metabolites exhibited unique structures and promising bioactivities. This review focuses on the chemodiversity and bioactivities of marine halometabolites from marine Actinobacteria reported in the last 15 years (2003–2018).
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Chen M, Zheng YY, Chen ZQ, Shen NX, Shen L, Zhang FM, Zhou XJ, Wang CY. NaBr-Induced Production of Brominated Azaphilones and Related Tricyclic Polyketides by the Marine-Derived Fungus Penicillium janthinellum HK1-6. JOURNAL OF NATURAL PRODUCTS 2019; 82:368-374. [PMID: 30693772 DOI: 10.1021/acs.jnatprod.8b00930] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cultivation of the mangrove rhizosphere soil-derived fungus Penicillium janthinellum HK1-6 with NaBr led to the isolation of two new brominated azaphilones, penicilones G and H (5, 6), two new tricyclic polyketides, penijanthinones A and B (7, 8), and two known azaphilones, penicilones A and B (1, 2). The planar structures and relative configurations of the new compounds were elucidated using comprehensive spectroscopic methods including 1D and 2D NOE spectra. Their absolute configurations were determined by chemical conversions, TDDFT ECD calculations, and comparisons of their ECD spectra. Interestingly, the NaBr-induced brominated azaphilones (5, 6) had the opposite configuration at C-7 compared to the chloro analogues (3, 4) produced by this fungus cultivated with sea salt. Ester hydrolysis of penicilone B (2) afforded the carboxylic acid side chain 2,4-dimethyldec-2-enoic acid (9), with a 4 S configuration assigned by its specific rotation. Penicilone H (6) showed antibacterial activity with MIC values ranging from 3.13 to 12.5 μg/mL.
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Affiliation(s)
- Min Chen
- Marine Science & Technology Institute, College of Environmental Science & Engineering , Yangzhou University , 196#, Huayang West Street , Yangzhou 225127 , People's Republic of China
| | - Yao-Yao Zheng
- Marine Science & Technology Institute, College of Environmental Science & Engineering , Yangzhou University , 196#, Huayang West Street , Yangzhou 225127 , People's Republic of China
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , People's Republic of China
| | - Zhi-Qi Chen
- Marine Science & Technology Institute, College of Environmental Science & Engineering , Yangzhou University , 196#, Huayang West Street , Yangzhou 225127 , People's Republic of China
| | - Nan-Xing Shen
- Marine Science & Technology Institute, College of Environmental Science & Engineering , Yangzhou University , 196#, Huayang West Street , Yangzhou 225127 , People's Republic of China
| | - Li Shen
- Institute of Translational Medicine, Medical College , Yangzhou University , Yangzhou City , Jiangsu Province 225001 , People's Republic of China
| | - Feng-Min Zhang
- Testing Center , Yangzhou University , 48#, Wenhui East Street , Yangzhou 225009 , People's Republic of China
| | - Xiao-Jian Zhou
- Marine Science & Technology Institute, College of Environmental Science & Engineering , Yangzhou University , 196#, Huayang West Street , Yangzhou 225127 , People's Republic of China
| | - Chang-Yun Wang
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , People's Republic of China
- Laboratory for Marine Drugs and Bioproducts , Qingdao National Laboratory for Marine Science and Technology , Qingdao 266237 , People's Republic of China
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Chatterjee S, Bhattacharjee P, Butterfoss GL, Achari A, Jaisankar P. Establishment of atropisomerism in 3-indolyl furanoids: a synthetic, experimental and theoretical perspective. RSC Adv 2019; 9:22384-22388. [PMID: 35519481 PMCID: PMC9066644 DOI: 10.1039/c9ra05350f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 07/15/2019] [Indexed: 11/21/2022] Open
Abstract
A number of axially chiral 3-indolyl furanoids have been synthesized and the individual enantiomers are found to be configurationally stable and isolable at room temperature.
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Affiliation(s)
- Sourav Chatterjee
- Laboratory of Catalysis and Chemical Biology
- Department of Organic and Medicinal Chemistry
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700 032
- India
| | - Pinaki Bhattacharjee
- Laboratory of Catalysis and Chemical Biology
- Department of Organic and Medicinal Chemistry
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700 032
- India
| | - Glenn L. Butterfoss
- Center for Genomics and Systems Biology
- New York University Abu Dhabi
- Abu Dhabi-129188
- United Arab Emirates
| | - Anushree Achari
- Laboratory of Catalysis and Chemical Biology
- Department of Organic and Medicinal Chemistry
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700 032
- India
| | - Parasuraman Jaisankar
- Laboratory of Catalysis and Chemical Biology
- Department of Organic and Medicinal Chemistry
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700 032
- India
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40
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Kemung HM, Tan LTH, Khan TM, Chan KG, Pusparajah P, Goh BH, Lee LH. Streptomyces as a Prominent Resource of Future Anti-MRSA Drugs. Front Microbiol 2018; 9:2221. [PMID: 30319563 PMCID: PMC6165876 DOI: 10.3389/fmicb.2018.02221] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 08/30/2018] [Indexed: 01/21/2023] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) pose a significant health threat as they tend to cause severe infections in vulnerable populations and are difficult to treat due to a limited range of effective antibiotics and also their ability to form biofilm. These organisms were once limited to hospital acquired infections but are now widely present in the community and even in animals. Furthermore, these organisms are constantly evolving to develop resistance to more antibiotics. This results in a need for new clinically useful antibiotics and one potential source are the Streptomyces which have already been the source of several anti-MRSA drugs including vancomycin. There remain large numbers of Streptomyces potentially undiscovered in underexplored regions such as mangrove, deserts, marine, and freshwater environments as well as endophytes. Organisms from these regions also face significant challenges to survival which often result in the production of novel bioactive compounds, several of which have already shown promise in drug development. We review the various mechanisms of antibiotic resistance in MRSA and all the known compounds isolated from Streptomyces with anti-MRSA activity with a focus on those from underexplored regions. The isolation of the full array of compounds Streptomyces are potentially capable of producing in the laboratory has proven a challenge, we also review techniques that have been used to overcome this obstacle including genetic cluster analysis. Additionally, we review the in vivo work done thus far with promising compounds of Streptomyces origin as well as the animal models that could be used for this work.
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Affiliation(s)
- Hefa Mangzira Kemung
- Novel Bacteria and Drug Discovery Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Loh Teng-Hern Tan
- Novel Bacteria and Drug Discovery Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Tahir Mehmood Khan
- Novel Bacteria and Drug Discovery Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,The Institute of Pharmaceutical Sciences (IPS), University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia.,International Genome Centre, Jiangsu University, Zhenjiang, China
| | - Priyia Pusparajah
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Bey-Hing Goh
- Novel Bacteria and Drug Discovery Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Center of Health Outcomes Research and Therapeutic Safety (Cohorts), School of Pharmaceutical Sciences, University of Phayao, Mueang Phayao, Thailand
| | - Learn-Han Lee
- Novel Bacteria and Drug Discovery Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia.,Center of Health Outcomes Research and Therapeutic Safety (Cohorts), School of Pharmaceutical Sciences, University of Phayao, Mueang Phayao, Thailand
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Structural Determination of Ruthenium Complexes Containing Bi-Dentate Pyrrole-Ketone Ligands. MOLECULES (BASEL, SWITZERLAND) 2018; 23:molecules23010159. [PMID: 29342833 PMCID: PMC6016999 DOI: 10.3390/molecules23010159] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 01/06/2018] [Accepted: 01/12/2018] [Indexed: 12/28/2022]
Abstract
A series of ruthenium compounds containing a pyrrole-ketone bidentate ligand, 2-(2′-methoxybenzoyl)pyrrole (1), have been synthesized and characterized. Reacting 1 with [(η6-cymene)RuCl2]2 and RuHCl(CO)(PPh3)3 generated Ru(η6-cymene)[C4H3N-2-(CO-C6H4-2-OMe)]Cl (2) and {RuCl(CO)(PPh3)2[C4H3N-2-(COC6H4-2-OMe)]} (3), respectively, in moderate yields. Successively reacting 2 with sodium cyanate and sodium azide gave {Ru(η6-cymene)[C4H3N-2-(CO-C6H4-2-OMe)]X} (4, X=OCN; 5, X=N3) with the elimination of sodium chloride. Compounds 2–5 were all characterized by 1H and 13C-NMR spectra and their structures were also determined by X-ray single crystallography.
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Imamura K, Ueno Y, Akimoto S, Eda K, Du Y, Eerdun C, Wang M, Nishinaka K, Tsuda A. An Acid-Responsive Single Trichromatic Luminescent Dye That Provides Pure White-Light Emission. CHEMPHOTOCHEM 2017; 1:427-431. [PMID: 29104915 PMCID: PMC5658979 DOI: 10.1002/cptc.201700108] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Indexed: 11/26/2022]
Abstract
A novel acid‐responsive single trichromatic luminescent dye capable of emitting pure white light (WL) is reported. A newly designed p‐phenylene‐bridged bipyrrole bearing N‐alkylimino groups (1 a) specifically provides WL emission upon mixing with trifluoroacetic acid (TFA) in a CH2Cl2 solution. The emission originates from the trichromatic luminescent behavior of 1 a upon protonation of the imino groups. The blue‐light‐emitting 1 a exhibits dramatic color changes in fluorescence to orange and green upon mono‐ and diprotonation, respectively, providing a wide emission band in the range of λ=400–800 nm that provide WL when the compound is in a dynamic equilibrium between the three states. The sample also exhibits low self‐absorption of the emitted light and a high fluorescence quantum yield upon excitation with UV light.
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Affiliation(s)
- Keigo Imamura
- Department of Chemistry, Graduate School of Science Kobe University1-1 Rokkodai-cho, Nada-ku Kobe 657-8501Japan
| | - Yoshifumi Ueno
- Department of Chemistry, Graduate School of Science Kobe University1-1 Rokkodai-cho, Nada-ku Kobe 657-8501Japan
| | - Seiji Akimoto
- Department of Chemistry, Graduate School of Science Kobe University1-1 Rokkodai-cho, Nada-ku Kobe 657-8501Japan
| | - Kazuo Eda
- Department of Chemistry, Graduate School of Science Kobe University1-1 Rokkodai-cho, Nada-ku Kobe 657-8501Japan
| | - Yanqing Du
- School of Pharmaceutical Sciences Inner Mongolia Medical University, Jinshan Economic & Technology Development District Hohhot, Inner Mongolia 010100 P.R. China
| | - Chaolu Eerdun
- School of Pharmaceutical Sciences Inner Mongolia Medical University, Jinshan Economic & Technology Development District Hohhot, Inner Mongolia 010100 P.R. China
| | - Meiling Wang
- School of Pharmaceutical Sciences Inner Mongolia Medical University, Jinshan Economic & Technology Development District Hohhot, Inner Mongolia 010100 P.R. China
| | - Kumiko Nishinaka
- Department of Chemistry, Graduate School of Science Kobe University1-1 Rokkodai-cho, Nada-ku Kobe 657-8501Japan
| | - Akihiko Tsuda
- Department of Chemistry, Graduate School of Science Kobe University1-1 Rokkodai-cho, Nada-ku Kobe 657-8501Japan.,Department of Chemistry Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu Shiga 520-2192 Japan
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43
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Yao Y, Wang X, Liang G. Total syntheses of (+)-agelastatin A and (+)-agelastatin B through cationic cyclizations. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.06.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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44
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Synthesis and Bioactivity Evaluation of Novel 2-Salicyloylbenzofurans as Antibacterial Agents. Molecules 2017; 22:molecules22050687. [PMID: 28441350 PMCID: PMC6154660 DOI: 10.3390/molecules22050687] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 04/16/2017] [Accepted: 04/21/2017] [Indexed: 01/01/2023] Open
Abstract
In order to discover new antibacterial agents, series of 2-salicyloylbenzofuran derivatives were designed, synthesized and evaluated for their antibacterial activities against three Gram-(+) strains (methicillin-sensitive Staphylococcus aureus (MSSA) ATCC 29213, methicillin-resistant Staphylococcus aureus (MRSA) ATCC 43300, and Streptococcus faecalis (S. faecalis) ATCC 29212) and one Gram-(-) strain (Escherichia coli (E. coli) ATCC 25922). The 2-salicyloylbenzofuran heterocycles were generated by Rap-Stoermer condensation of salicylaldehydes with phenacyl bromides and then converted to diverse O-ether derivatives by Williamson synthesis. The targeted products were screened for in vitro qualitative (zone of inhibition) and quantitative (MIC) antibacterial activities by agar well diffusion assay and agar dilution method. Amongst the compounds, those bearing carboxylic acid functional group were found to exhibit reasonable activity against Gram-(+) bacterial strains including S. faecalis, MSSA and MRSA with the most potent antibacterial agent 8h (MICs = 0.06-0.12 mM). Besides, the 2-salicyloylbenzofurans partly displayed inhibitory activity against MRSA with the best MICs = 0.14 mM (8f) and 0.12 mM (8h). Finally, the antibacterial results preliminarily suggested that the substituent bearing carboxylic acid group at salicyloyl-C2 and the bromine atoms on the benzofuran moiety seem to be the functionality necessary for antibacterial activities.
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Janssen-Müller D, Singha S, Lied F, Gottschalk K, Glorius F. NHC-organokatalysierte CAr
-O-Bindungsspaltung: milder Zugang zu 2-Hydroxybenzophenonen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201610203] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daniel Janssen-Müller
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstraße 40 48149 Münster Deutschland
| | - Santanu Singha
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstraße 40 48149 Münster Deutschland
| | - Fabian Lied
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstraße 40 48149 Münster Deutschland
| | - Karin Gottschalk
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstraße 40 48149 Münster Deutschland
| | - Frank Glorius
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstraße 40 48149 Münster Deutschland
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Janssen-Müller D, Singha S, Lied F, Gottschalk K, Glorius F. NHC-Organocatalyzed CAr
−O Bond Cleavage: Mild Access to 2-Hydroxybenzophenones. Angew Chem Int Ed Engl 2017; 56:6276-6279. [DOI: 10.1002/anie.201610203] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 01/03/2017] [Indexed: 12/24/2022]
Affiliation(s)
- Daniel Janssen-Müller
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
| | - Santanu Singha
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
| | - Fabian Lied
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
| | - Karin Gottschalk
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
| | - Frank Glorius
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
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47
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Stodulski M, Kohlhepp SV, Raabe G, Gulder T. Exploration of the Bis(thio)urea-Catalyzed Atropselective Synthesis of Marinopyrrole A. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600147] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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48
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Chatterjee S, Butterfoss GL, Mandal M, Paul B, Gupta S, Bonneau R, Jaisankar P. Racemization barriers of atropisomeric 3,3′-bipyrroles: an experimental study with theoretical verification. RSC Adv 2016. [DOI: 10.1039/c6ra07585a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The activation barrier of racemization was determined for atropisomeric 3,3′-bipyrroles and they are found to be configurationally stable.
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Affiliation(s)
- Sourav Chatterjee
- Laboratory of Catalysis and Chemical Biology
- Department of Organic and Medicinal Chemistry
- CSIR-Indian Institute of Chemical Biology
- Kolkata – 700 032
- India
| | - Glenn L. Butterfoss
- Center for Genomics and Systems Biology
- New York University Abu Dhabi
- Abu Dhabi-129188
- United Arab Emirates
| | - Madhumita Mandal
- Laboratory of Catalysis and Chemical Biology
- Department of Organic and Medicinal Chemistry
- CSIR-Indian Institute of Chemical Biology
- Kolkata – 700 032
- India
| | - Bishwajit Paul
- Brigham and Women's Hospital
- Harvard Medical School
- Boston
- USA
| | - Sreya Gupta
- Laboratory of Catalysis and Chemical Biology
- Department of Organic and Medicinal Chemistry
- CSIR-Indian Institute of Chemical Biology
- Kolkata – 700 032
- India
| | - Richard Bonneau
- Center for Genomics and Systems Biology
- New York University
- New York
- USA
| | - Parasuraman Jaisankar
- Laboratory of Catalysis and Chemical Biology
- Department of Organic and Medicinal Chemistry
- CSIR-Indian Institute of Chemical Biology
- Kolkata – 700 032
- India
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Kumarasamy E, Raghunathan R, Sibi MP, Sivaguru J. Nonbiaryl and Heterobiaryl Atropisomers: Molecular Templates with Promise for Atropselective Chemical Transformations. Chem Rev 2015; 115:11239-300. [DOI: 10.1021/acs.chemrev.5b00136] [Citation(s) in RCA: 399] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Elango Kumarasamy
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Ramya Raghunathan
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Mukund P. Sibi
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - J. Sivaguru
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
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50
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Li R. Marinopyrroles: Unique Drug Discoveries Based on Marine Natural Products. Med Res Rev 2015; 36:169-89. [DOI: 10.1002/med.21359] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Rongshi Li
- Department of Pharmaceutical Sciences, Center for Drug Discovery; College of Pharmacy, Cancer Genes and Molecular Regulation Program, Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center; Omaha NE 68198-6805
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