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Sato T. Development of Stereodivergent Synthesis of Skipped Dienes and Application to Unified Total Synthesis of Madangamine Alkaloids. J SYN ORG CHEM JPN 2022. [DOI: 10.5059/yukigoseikyokaishi.80.343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Takaaki Sato
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University
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2
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Ali R, Ahmed W, Jayant V, alvi S, Ahmed N, Ahmed A. Metathesis reactions in total‐ and natural product fragments syntheses. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100753] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Rashid Ali
- Jamia Millia Islamia New Delhi India 110025 Department of Chemistry Jamia Nagar,New Delhi india110025 110025 New Delhi INDIA
| | - Waqar Ahmed
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - Vikrant Jayant
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - shakeel alvi
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - Nadeem Ahmed
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - Azeem Ahmed
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
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3
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Shiomi S, Shennan BDA, Yamazaki K, Fuentes de Arriba ÁL, Vasu D, Hamlin TA, Dixon DJ. A New Organocatalytic Desymmetrization Reaction Enables the Enantioselective Total Synthesis of Madangamine E. J Am Chem Soc 2022; 144:1407-1415. [PMID: 35037758 PMCID: PMC8796237 DOI: 10.1021/jacs.1c12040] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
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The
enantioselective total synthesis of madangamine E has been
completed in 30 steps, enabled by a new catalytic and highly enantioselective
desymmetrizing intramolecular Michael addition reaction of a prochiral
ketone to a tethered β,β′-disubstituted
nitroolefin. This key carbon–carbon bond forming reaction efficiently
constructed a chiral bicyclic core in near-perfect enantio- and diastereo-selectivity,
concurrently established three stereogenic centers, including a quaternary
carbon, and proved highly scalable. Furthermore, the pathway and origins
of enantioselectivity in this catalytic cyclization were probed using
density functional theory (DFT) calculations, which revealed the crucial
substrate/catalyst interactions in the enantio-determining step. Following
construction of the bicyclic core, the total synthesis of madangamine
E could be completed, with key steps including a mild one-pot oxidative
lactamization of an amino alcohol, a two-step Z-selective
olefination of a sterically hindered ketone, and ring-closing metatheses
to install the two macrocyclic rings.
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Affiliation(s)
- Shinya Shiomi
- Department of Chemistry, University of Oxford, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K
| | - Benjamin D A Shennan
- Department of Chemistry, University of Oxford, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K
| | - Ken Yamazaki
- Department of Chemistry, University of Oxford, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K.,Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), and Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Ángel L Fuentes de Arriba
- Department of Chemistry, University of Oxford, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K
| | - Dhananjayan Vasu
- Department of Chemistry, University of Oxford, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K
| | - Trevor A Hamlin
- Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), and Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Darren J Dixon
- Department of Chemistry, University of Oxford, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K
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4
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Sato T, Suto T, Nagashima Y, Mukai S, Chida N. Total Synthesis of Skipped Diene Natural Products. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100421] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Takaaki Sato
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Takahiro Suto
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Yoshiyuki Nagashima
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Shori Mukai
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Noritaka Chida
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
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