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Kiprova N, Desnoyers M, Narobe R, Klufts-Edel A, Chaud J, König B, Compain P, Kern N. Towards a General Access to 1-Azaspirocyclic Systems via Photoinduced, Reductive Decarboxylative Radical Cyclizations. Chemistry 2023:e202303841. [PMID: 38084823 DOI: 10.1002/chem.202303841] [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: 11/18/2023] [Indexed: 01/13/2024]
Abstract
A convenient and versatile approach to important 1-azaspirocyclic systems relevant to medicinal chemistry and natural products is reported herein. The main strategy relies on a reductive decarboxylative cyclization of redox-active esters which can be rapidly assembled from abundant cyclic azaacids and tailored acceptor sidechains, with a focus on alkyne acceptors enabling the generation of useful exo-alkene moieties. Diastereoconvergent variants were studied and could be achieved either through remote stereocontrol or conformational restriction in bicyclic carbamate substrates. Two sets of metal-free photocatalytic conditions employing inexpensive eosin Y were disclosed and studied experimentally to highlight key mechanistic divergences.
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Affiliation(s)
- Natalia Kiprova
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Strasbourg/Université de Haute-Alsace/CNRS, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Marine Desnoyers
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Strasbourg/Université de Haute-Alsace/CNRS, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Rok Narobe
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, Germany
| | - Arthur Klufts-Edel
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Strasbourg/Université de Haute-Alsace/CNRS, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Juliane Chaud
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Strasbourg/Université de Haute-Alsace/CNRS, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Burkhard König
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, Germany
| | - Philippe Compain
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Strasbourg/Université de Haute-Alsace/CNRS, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Nicolas Kern
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Strasbourg/Université de Haute-Alsace/CNRS, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
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Hsu D, Hwang T. Stereoselective Formal Synthesis of Platencin. ChemistrySelect 2022. [DOI: 10.1002/slct.202103794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Day‐Shin Hsu
- Department of Chemistry and Biochemistry National Chung Cheng University Minhsiung, Chiayi Taiwan 62102
| | - Tai‐Yun Hwang
- Department of Chemistry and Biochemistry National Chung Cheng University Minhsiung, Chiayi Taiwan 62102
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3
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Affiliation(s)
- Day-Shin Hsu
- Department of Chemistry and Biochemistry; National Chung Cheng University; 621 Minhsiung Taiwan
| | - Tai-Yu Hwang
- Department of Chemistry and Biochemistry; National Chung Cheng University; 621 Minhsiung Taiwan
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Defieber C, Mohr JT, Grabovyi GA, Stoltz BM. Short Enantioselective Formal Synthesis of (-)-Platencin. SYNTHESIS-STUTTGART 2018; 50:4359-4368. [PMID: 31061542 DOI: 10.1055/s-0037-1610437] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
A short enantioselective formal synthesis of the antibiotic natural product platencin is reported. Key steps in the synthesis include enantioselective decarboxylation alkylation, aldehyde/olefin radical cyclization, and regioselective aldol cyclization.
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Affiliation(s)
- Christian Defieber
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering California Institute of Technology, 1200 E California Blvd. MC 101-20, Pasadena, CA 91125, USA
| | - Justin T Mohr
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering California Institute of Technology, 1200 E California Blvd. MC 101-20, Pasadena, CA 91125, USA.,Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, IL 60607, USA
| | - Gennadii A Grabovyi
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, IL 60607, USA
| | - Brian M Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering California Institute of Technology, 1200 E California Blvd. MC 101-20, Pasadena, CA 91125, USA
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Hauduc C, Bélanger G. General Approach toward Aspidospermatan-Type Alkaloids Using One-Pot Vilsmeier–Haack Cyclization and Azomethine Ylide Cycloaddition. J Org Chem 2017; 82:4703-4712. [DOI: 10.1021/acs.joc.7b00345] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Clémence Hauduc
- Département de Chimie, Université de Sherbrooke 2500 boulevard Université, Sherbrooke, Québec J1K 2R1, Canada
| | - Guillaume Bélanger
- Département de Chimie, Université de Sherbrooke 2500 boulevard Université, Sherbrooke, Québec J1K 2R1, Canada
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Yoshimitsu T. Radical Cyclization Strategies in Total Syntheses of Bioactive Fused Cyclic Natural Products. J SYN ORG CHEM JPN 2016. [DOI: 10.5059/yukigoseikyokaishi.74.350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Shang R, Liang J, Yi Y, Liu Y, Wang J. Review of Platensimycin and Platencin: Inhibitors of β-Ketoacyl-acyl Carrier Protein (ACP) Synthase III (FabH). Molecules 2015; 20:16127-41. [PMID: 26404223 PMCID: PMC6332302 DOI: 10.3390/molecules200916127] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/24/2015] [Accepted: 08/28/2015] [Indexed: 11/29/2022] Open
Abstract
Platensimycin and platencin were successively discovered from the strain Streptomyces platensis through systematic screening. These natural products have been defined as promising agents for fighting multidrug resistance in bacteria by targeting type II fatty acid synthesis with slightly different mechanisms. Bioactivity studies have shown that platensimycin and platencin offer great potential to inhibit many resistant bacteria with no cross-resistance or toxicity observed in vivo. This review summarizes the general information on platensimycin and platencin, including antibacterial and self-resistant mechanisms. Furthermore, the total synthesis pathways of platensimycin and platencin and their analogues from recent studies are presented.
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Affiliation(s)
- Ruofeng Shang
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou 730050, China.
| | - Jianping Liang
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou 730050, China.
| | - Yunpeng Yi
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou 730050, China.
| | - Yu Liu
- Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou 730050, China.
| | - Jiatu Wang
- Affiliated Hospital of Gansu University of Chinese Medicine, Lanzhou 730000, China.
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