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Inomata K, Akahane Y, Miura A. Alternative Chiral Preparations of a Swaminathan Ketone via Asymmetric Aldol Reactions Mediated by Chiral Amines Bearing a Pyrrolidine. HETEROCYCLES 2020. [DOI: 10.3987/com-19-14124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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2
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Affiliation(s)
- Lei Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Zhuang Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Xiwu Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Yanxing Jia
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
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Lu J, Zhang Y, Yang W, Guo Q, Gao L, Song Z. Transformation of the B Ring to the C Ring of Bryostatins by Csp 3-H Amination and Z to E Isomerization. Org Lett 2017; 19:5232-5235. [PMID: 28901773 DOI: 10.1021/acs.orglett.7b02510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An interesting approach to transform the B ring of bryostatins to the C ring has been developed. The key tactics of the approach feature an intramolecular Csp3-H bond amination to form spirocyclic hemiaminal, which undergoes ring opening to afford the C ring found in bryostatin 17. The subsequent epoxidation/oxidation sequence results in Z to E isomerization of the exo-cyclic enoate, delivering the common precursor, which could be transformed into the C ring found in bryostatins 1, 2, 4-9, 12, 14, and 15.
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Affiliation(s)
- Ji Lu
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - Yuebao Zhang
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - WenYu Yang
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - Qianyou Guo
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - Lu Gao
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China.,State Key Laboratory of Elemento-organic Chemistry, Nankai University , Tianjin 300071, P. R. China
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Abstract
Covering: 2015. Previous review: Nat. Prod. Rep., 2016, 33, 382-431This review covers the literature published in 2015 for marine natural products (MNPs), with 1220 citations (792 for the period January to December 2015) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1340 in 429 papers for 2015), together with the relevant biological activities, source organisms and country of origin. Reviews, biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
| | - Brent R Copp
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Robert A Keyzers
- Centre for Biodiscovery, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Murray H G Munro
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
| | - Michèle R Prinsep
- Chemistry, School of Science, University of Waikato, Hamilton, New Zealand
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Nonhalogenated Heterotricyclic Sesquiterpenes From Marine Origin I. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2017. [DOI: 10.1016/b978-0-444-63931-8.00007-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2015. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.08.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Makarov AS, Merkushev AA, Uchuskin MG, Trushkov IV. Oxidative Furan-to-Indole Rearrangement. Synthesis of 2-(2-Acylvinyl)indoles and Flinderole C Analogues. Org Lett 2016; 18:2192-5. [PMID: 27074535 DOI: 10.1021/acs.orglett.6b00805] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Oxidative rearrangement of 2-(2-aminobenzyl)furans affording 2-(2-acylvinyl)indoles in a stereocontrolled manner in good-to-excellent yields has been developed. Thus, (2-aminobenzyl)furans with electron-releasing alkoxy substituents in the phenyl group form only E-isomers of 2-(2-acylvinyl)indoles. Conversely, substrates without such substituents produce target products as Z-isomers exclusively. A short diastereoselective method for the transformation of the obtained 2-(2-acylvinyl)indoles into antimalarial bisindole alkaloid flinderole A-C analogues has been developed.
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Affiliation(s)
- Anton S Makarov
- Department of Chemistry, Perm State University , Bukireva st. 15, Perm 614990, Russia
| | - Anton A Merkushev
- Department of Chemistry, Perm State University , Bukireva st. 15, Perm 614990, Russia.,Institute of Technical Chemistry UrB RAS, Academika Koroleva st. 3, Perm 614013, Russia
| | - Maxim G Uchuskin
- Department of Chemistry, Perm State University , Bukireva st. 15, Perm 614990, Russia
| | - Igor V Trushkov
- Department of Chemistry, M.V. Lomonosov Moscow State University , Leninskie gory 1-3, Moscow 119991, Russia.,Laboratory of Chemical Synthesis, Federal Research Center of Pediatric Hematology, Oncology and Immunology , Samory Mashela 1, Moscow 117997, Russia
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Boussonnière A, Bénéteau R, Rouaud JC, Despiau C, Lebreton J, Dénès F. Chemoselective access to substituted butenolides via a radical cyclization pathway: mechanistic study, limits and application. PURE APPL CHEM 2016. [DOI: 10.1515/pac-2015-1203] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractWe developed a new approach to γ-lactols and methylene-γ-lactols based upon the radical cyclization of aluminium acetals obtained by reduction of α-bromoesters with DIBAL-H. The cyclic aluminium acetals resulting from the cyclization process could engage in situ in further functionalization, as illustrated by the Oppenauer-type oxidation to give the corresponding lactones and γ-butenolides. The preparation of butenolides using this strategy compared favourably with the direct, tin-mediated cyclization of α-bromoesters, for which side reactions such as epimerization via [1,5]-HAT processes have been observed.
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Affiliation(s)
- Anne Boussonnière
- 1Université de Nantes, CEISAM UMR-CNRS 6230 – UFR des Sciences et des Techniques 2 rue de la Houssinière BP 92208, 44322 Nantes Cedex 3, France
| | - Romain Bénéteau
- 1Université de Nantes, CEISAM UMR-CNRS 6230 – UFR des Sciences et des Techniques 2 rue de la Houssinière BP 92208, 44322 Nantes Cedex 3, France
| | - Jean-Christophe Rouaud
- 1Université de Nantes, CEISAM UMR-CNRS 6230 – UFR des Sciences et des Techniques 2 rue de la Houssinière BP 92208, 44322 Nantes Cedex 3, France
| | - Carole Despiau
- 1Université de Nantes, CEISAM UMR-CNRS 6230 – UFR des Sciences et des Techniques 2 rue de la Houssinière BP 92208, 44322 Nantes Cedex 3, France
| | - Jacques Lebreton
- 1Université de Nantes, CEISAM UMR-CNRS 6230 – UFR des Sciences et des Techniques 2 rue de la Houssinière BP 92208, 44322 Nantes Cedex 3, France
| | - Fabrice Dénès
- 1Université de Nantes, CEISAM UMR-CNRS 6230 – UFR des Sciences et des Techniques 2 rue de la Houssinière BP 92208, 44322 Nantes Cedex 3, France
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Bénéteau R, Despiau CF, Rouaud J, Boussonnière A, Silvestre V, Lebreton J, Dénès F. Synthesis of Polysubstituted γ‐Butenolides via a Radical Pathway: Cyclization of α‐Bromo Aluminium Acetals and Comparison with the Cyclization of α‐Bromoesters at High Temperature. Chemistry 2015; 21:11378-86. [DOI: 10.1002/chem.201501294] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Romain Bénéteau
- CEISAM UMR 6230 ‐ UFR des Sciences et des Techniques, Université de Nantes, 2 rue de la Houssiniere BP 92208‐44322, Nantes Cedex 3 (France)
| | - Carole F. Despiau
- CEISAM UMR 6230 ‐ UFR des Sciences et des Techniques, Université de Nantes, 2 rue de la Houssiniere BP 92208‐44322, Nantes Cedex 3 (France)
| | - Jean‐Christophe Rouaud
- CEISAM UMR 6230 ‐ UFR des Sciences et des Techniques, Université de Nantes, 2 rue de la Houssiniere BP 92208‐44322, Nantes Cedex 3 (France)
| | - Anne Boussonnière
- CEISAM UMR 6230 ‐ UFR des Sciences et des Techniques, Université de Nantes, 2 rue de la Houssiniere BP 92208‐44322, Nantes Cedex 3 (France)
- Current Address: Université du Maine and CNRS UMR 6283, Institut des Molécules et Matériaux du Mans, Faculté des Sciences et Techniques, avenue Olivier Messiaen, 72085 Le Mans Cedex 9 (France)
| | - Virginie Silvestre
- CEISAM UMR 6230 ‐ UFR des Sciences et des Techniques, Université de Nantes, 2 rue de la Houssiniere BP 92208‐44322, Nantes Cedex 3 (France)
| | - Jacques Lebreton
- CEISAM UMR 6230 ‐ UFR des Sciences et des Techniques, Université de Nantes, 2 rue de la Houssiniere BP 92208‐44322, Nantes Cedex 3 (France)
| | - Fabrice Dénès
- CEISAM UMR 6230 ‐ UFR des Sciences et des Techniques, Université de Nantes, 2 rue de la Houssiniere BP 92208‐44322, Nantes Cedex 3 (France)
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