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Pérez Á, Quílez
del Moral JF, Galisteo A, Amaro JM, Barrero AF. Bioinspired Synthesis of Platensimycin from Natural ent-Kaurenoic Acids. Org Lett 2023; 25:5401-5405. [PMID: 37338151 PMCID: PMC10391625 DOI: 10.1021/acs.orglett.3c01470] [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: 05/04/2023] [Indexed: 06/21/2023]
Abstract
The biomimetic formal synthesis of the antibiotic platensimycin for the treatment of infection by multidrug-resistant bacteria was accomplished starting from either ent-kaurenoic acid or grandiflorenic acid, each of which is a natural compound available in multigram scale from its natural source. Apart from the natural origin of the selected precursors, the keys of the described approach are the long-distance functionalization of ent-kaurenoic acid at C11 and the efficient protocol for the A-ring degradation of the diterpene framework.
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Affiliation(s)
- Álvaro Pérez
- Department
of Organic Chemistry, Institute of Biotechnology, University of Granada, 18071 Granada, Spain
| | - José F. Quílez
del Moral
- Department
of Organic Chemistry, Institute of Biotechnology, University of Granada, 18071 Granada, Spain
| | - Alberto Galisteo
- Department
of Organic Chemistry, Institute of Biotechnology, University of Granada, 18071 Granada, Spain
| | - Juan M. Amaro
- Department
of Chemistry, Faculty of Sciences, University
of Los Andes, Merida 5101, Venezuela
| | - Alejandro F. Barrero
- Department
of Organic Chemistry, Institute of Biotechnology, University of Granada, 18071 Granada, Spain
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Deng Y, Li Y, Wen Z, Ruiz CH, Weng X, Cameron MD, Duan Y, Huang Y. Morphing Natural Product Platensimycin via Heck, Sonogashira, and One-Pot Sonogashira/Cycloaddition Reactions to Produce Antibiotics with In Vivo Activity. Antibiotics (Basel) 2022; 11:antibiotics11040425. [PMID: 35453177 PMCID: PMC9027111 DOI: 10.3390/antibiotics11040425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/10/2022] [Accepted: 03/17/2022] [Indexed: 12/04/2022] Open
Abstract
Type II fatty acid synthases are promising drug targets against major bacterial pathogens. Platensimycin (PTM) is a potent inhibitor against β-ketoacyl-[acyl carrier protein] synthase II (FabF) and β-ketoacyl-[acyl carrier protein] synthase I (FabB), while the poor pharmacokinetics has prevented its further development. In this work, thirty-two PTM derivatives were rapidly prepared via Heck, Sonogashira, and one-pot Sonogashira/cycloaddition cascade reactions based on the Gram-scale synthesis of 6-iodo PTM (4). About half of the synthesized compounds were approximately equipotent to PTM against the tested Staphylococcus aureus strains. Among them, the representative compounds 4, A4, and B8 exhibited different plasma protein binding affinity or stability in the human hepatic microsome assay and showed improved in vivo efficacy over PTM in a mouse peritonitis model. In addition, A4 was also effective in an S. aureus-infected skin mouse model. Our study not only significantly expands the known PTM derivatives with improved antibacterial activities in vivo, but showcased that C–C cross-coupling reactions are useful tools to functionalize natural product drug leads.
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Affiliation(s)
- Youchao Deng
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (Y.D.); (Y.L.); (Z.W.); (X.W.)
| | - Yuling Li
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (Y.D.); (Y.L.); (Z.W.); (X.W.)
| | - Zhongqing Wen
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (Y.D.); (Y.L.); (Z.W.); (X.W.)
| | - Claudia H. Ruiz
- Departments of Molecular Medicine, The Scripps Research Institute, Jupiter, FL 33458, USA; (C.H.R.); (M.D.C.)
| | - Xiang Weng
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (Y.D.); (Y.L.); (Z.W.); (X.W.)
| | - Michael D. Cameron
- Departments of Molecular Medicine, The Scripps Research Institute, Jupiter, FL 33458, USA; (C.H.R.); (M.D.C.)
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (Y.D.); (Y.L.); (Z.W.); (X.W.)
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery, Changsha 410011, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha 410011, China
- Correspondence: (Y.D.); (Y.H.)
| | - Yong Huang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (Y.D.); (Y.L.); (Z.W.); (X.W.)
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha 410011, China
- Correspondence: (Y.D.); (Y.H.)
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Deng Y, Weng X, Li Y, Su M, Wen Z, Ji X, Ren N, Shen B, Duan Y, Huang Y. Late-Stage Functionalization of Platensimycin Leading to Multiple Analogues with Improved Antibacterial Activity in Vitro and in Vivo. J Med Chem 2019; 62:6682-6693. [PMID: 31265289 PMCID: PMC6755679 DOI: 10.1021/acs.jmedchem.9b00616] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Bacterial fatty acid synthases are promising antibacterial targets against multidrug-resistant pathogens. Platensimycin (PTM) is a potent FabB/FabF inhibitor, while its poor pharmacokinetics hampers the clinical development. In this study, a focused library of PTM derivatives was prepared through thiolysis of PTM oxirane (1), followed by various C-C cross-coupling reactions in high yields. Antibacterial screening of these compounds in vitro yielded multiple hits with improved anti-Staphylococcus activities over PTM. Among them, compounds A1, A3, A17, and A28 exhibited improved antibacterial activities over PTM against methicillin-resistant Staphylococcus aureus (MRSA) in a mouse peritonitis model. Compound A28 was further shown to be effective against MRSA infection in a mouse wound model, in comparison to mupirocin. Therefore, the facile preparation and screening of these PTM derivatives, together with their potent antibacterial activities in vivo, suggest a promising strategy to improve the antibacterial activity and pharmacokinetic properties of PTM.
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Affiliation(s)
- Youchao Deng
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Xiang Weng
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Yuling Li
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Meng Su
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Zhongqing Wen
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Xinxin Ji
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Nan Ren
- Xiangya Hospital , Central South University , Changsha , Hunan 410008 , China
| | | | - Yanwen Duan
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery , Changsha , Hunan 410011 , China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery , Changsha , Hunan 410011 , China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery , Changsha , Hunan 410011 , China
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