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Mankad Y, Das P, Pathan E, Deshpande MV, Reddy DS. Herbicidal bio-assay of isocladosporin enantiomers and determination of its plausible absolute configuration. J Antibiot (Tokyo) 2021; 74:280-284. [PMID: 33526864 DOI: 10.1038/s41429-020-00391-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 11/07/2020] [Accepted: 11/10/2020] [Indexed: 11/09/2022]
Abstract
A fungal metabolite, isocladosporin was isolated from natural fungus, Cladosporium cladosporioides in the mid of 90s. Due to the lack of optical rotation of isolated natural product sample, the absolute configuration of the natural product remained undetermined for more than two decades. Herein, we demonstrated an SAR study of enantiomers of isocladosporin in herbicidal bio-assay against wheat coleoptile. Using this study as a comparative tool we further proposed the plausible absolute configuration of natural isocladosporin for the first time. The assigned configuration was also supported through biogenetic precursors.
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Affiliation(s)
- Yash Mankad
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
| | - Pronay Das
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ejaj Pathan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.,Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
| | - M V Deshpande
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India. .,Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India.
| | - D Srinivasa Reddy
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India. .,CSIR-Indian Institute of Intigrative medicine, Canal Road, Jammu, 180001, India.
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Rusch M, Thevenon A, Hoepfner D, Aust T, Studer C, Patoor M, Rollin P, Livendahl M, Ranieri B, Schmitt E, Spanka C, Gademann K, Bouchez LC. Design and Synthesis of Metabolically Stable tRNA Synthetase Inhibitors Derived from Cladosporin. Chembiochem 2019; 20:644-649. [DOI: 10.1002/cbic.201800587] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Marion Rusch
- NIBR–Novartis Institute for Biomedical Research Fabrikstrasse 22-1.051.17 4054 Basel Switzerland
| | - Arnaud Thevenon
- NIBR–Novartis Institute for Biomedical Research Fabrikstrasse 22-1.051.17 4054 Basel Switzerland
- Department of ChemistryImperial College London SW7 2AZ UK
| | - Dominic Hoepfner
- NIBR–Novartis Institute for Biomedical Research Fabrikstrasse 22-1.051.17 4054 Basel Switzerland
| | - Thomas Aust
- NIBR–Novartis Institute for Biomedical Research Fabrikstrasse 22-1.051.17 4054 Basel Switzerland
| | - Christian Studer
- NIBR–Novartis Institute for Biomedical Research Fabrikstrasse 22-1.051.17 4054 Basel Switzerland
| | - Maude Patoor
- NIBR–Novartis Institute for Biomedical Research Fabrikstrasse 22-1.051.17 4054 Basel Switzerland
| | - Patrick Rollin
- Institut de Chimie Organique et Analytique (ICOA)UMR7311Université d'Orléans 45100 Orléans France
| | - Madeleine Livendahl
- NIBR–Novartis Institute for Biomedical Research Fabrikstrasse 22-1.051.17 4054 Basel Switzerland
| | - Beatrice Ranieri
- NIBR–Novartis Institute for Biomedical Research Fabrikstrasse 22-1.051.17 4054 Basel Switzerland
| | - Esther Schmitt
- NIBR–Novartis Institute for Biomedical Research Fabrikstrasse 22-1.051.17 4054 Basel Switzerland
| | - Carsten Spanka
- NIBR–Novartis Institute for Biomedical Research Fabrikstrasse 22-1.051.17 4054 Basel Switzerland
| | - Karl Gademann
- University of ZürichDepartment of Chemistry Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Laure C. Bouchez
- NIBR–Novartis Institute for Biomedical Research Fabrikstrasse 22-1.051.17 4054 Basel Switzerland
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Affiliation(s)
- Jhillu Singh Yadav
- Indian Institute of Chemical Technology Uppal Road, Hyderabad, Telangana India 500007
| | - Ailuri Ramesh Reddy
- Indian Institute of Chemical Technology Uppal Road, Hyderabad, Telangana India 500007
- Department of ChemistryUniversity of Wollongong, Wollongong, NSW Australia 2500
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Das P, Babbar P, Malhotra N, Sharma M, Jachak GR, Gonnade RG, Shanmugam D, Harlos K, Yogavel M, Sharma A, Reddy DS. Specific Stereoisomeric Conformations Determine the Drug Potency of Cladosporin Scaffold against Malarial Parasite. J Med Chem 2018; 61:5664-5678. [DOI: 10.1021/acs.jmedchem.8b00565] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Pronay Das
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
| | - Palak Babbar
- Molecular Medicine Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi 110067, India
| | - Nipun Malhotra
- Molecular Medicine Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi 110067, India
| | - Manmohan Sharma
- Molecular Medicine Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi 110067, India
| | - Goraknath R. Jachak
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
| | - Rajesh G. Gonnade
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
- Center for Material Characterization, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Dhanasekaran Shanmugam
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Karl Harlos
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, The Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, U.K
| | - Manickam Yogavel
- Molecular Medicine Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi 110067, India
| | - Amit Sharma
- Molecular Medicine Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi 110067, India
| | - D. Srinivasa Reddy
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2016. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.09.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Genetic Validation of Leishmania donovani Lysyl-tRNA Synthetase Shows that It Is Indispensable for Parasite Growth and Infectivity. mSphere 2017; 2:mSphere00340-17. [PMID: 28875178 PMCID: PMC5577655 DOI: 10.1128/mspheredirect.00340-17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Accepted: 08/04/2017] [Indexed: 12/31/2022] Open
Abstract
Leishmania donovani is a protozoan parasite that causes visceral leishmaniasis. Increasing resistance and severe side effects of existing drugs have led to the need to identify new chemotherapeutic targets. Aminoacyl-tRNA synthetases (aaRSs) are ubiquitous and are required for protein synthesis. aaRSs are known drug targets for bacterial and fungal pathogens. Here, we have characterized and evaluated the essentiality of L. donovani lysyl-tRNA synthetase (LdLysRS). Two different coding sequences for lysyl-tRNA synthetases are annotated in the Leishmania genome database. LdLysRS-1 (LdBPK_150270.1), located on chromosome 15, is closer to apicomplexans and eukaryotes, whereas LdLysRS-2 (LdBPK_300130.1), present on chromosome 30, is closer to bacteria. In the present study, we have characterized LdLysRS-1. Recombinant LdLysRS-1 displayed aminoacylation activity, and the protein localized to the cytosol. The LdLysRS-1 heterozygous mutants had a restrictive growth phenotype and attenuated infectivity. LdLysRS-1 appears to be an essential gene, as a chromosomal knockout of LdLysRS-1 could be generated when the gene was provided on a rescuing plasmid. Cladosporin, a fungal secondary metabolite and a known inhibitor of LysRS, was more potent against promastigotes (50% inhibitory concentration [IC50], 4.19 µM) and intracellular amastigotes (IC50, 1.09 µM) than were isomers of cladosporin (3-epi-isocladosporin and isocladosporin). These compounds exhibited low toxicity to mammalian cells. The specificity of inhibition of parasite growth caused by these inhibitors was further assessed using LdLysRS-1 heterozygous mutant strains and rescue mutant promastigotes. These inhibitors inhibited the aminoacylation activity of recombinant LdLysRS. Our data provide a framework for the development of a new class of drugs against this parasite. IMPORTANCE Aminoacyl-tRNA synthetases are housekeeping enzymes essential for protein translation, providing charged tRNAs for the proper construction of peptide chains. These enzymes provide raw materials for protein translation and also ensure fidelity of translation. L. donovani is a protozoan parasite that causes visceral leishmaniasis. It is a continuously proliferating parasite that depends heavily on efficient protein translation. Lysyl-tRNA synthetase is one of the aaRSs which charges lysine to its cognate tRNA. Two different coding sequences for lysyl-tRNA synthetases (LdLysRS) are present in this parasite. LdLysRS-1 is closer to apicomplexans and eukaryotes, whereas LdLysRS-2 is closer to bacteria. Here, we have characterized LdLysRS-1 of L. donovani. LdLysRS-1 appears to be an essential gene, as the chromosomal null mutants did not survive. The heterozygous mutants showed slower growth kinetics and exhibited attenuated virulence. This study also provides a platform to explore LdLysRS-1 as a potential drug target.
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Ganganna B, Srihari P, Yadav JS. Studies towards the total synthesis of cruentaren A and B: Stereoselective synthesis of fragments C1-C11, C12-C22 and C23-C28. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Stereoselective synthesis of (+)-decarestrictine L using tandem isomerization followed by C–O and C–C bond formation reaction. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.08.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Banoth S, Maity S, Kumar SR, Yadav JS, Mohapatra DK. Formal Total Synthesis of Brevisamide by Using a Tandem Isomerization/C-O and C-C Bond Formation Reaction. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600142] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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