Synthetic Efforts toward Lannotinidine G Based on an Aziridinium-Mediated Ring Contraction and Dienyne Metathesis
Lannotinidine G is a unique Lycopodium alkaloid that features a tricyclic [6/6/6] core with 3 contiguous stereocenters and a 1,3-diene moiety in addition to a 7-membered lactone. Herein, we disclose our efforts toward the synthesis of this natural product, which achieved the construction of the aza-...
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Published in | Organic letters Vol. 26; no. 15; pp. 3184 - 3188 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
WASHINGTON
American Chemical Society
19.04.2024
Amer Chemical Soc |
Subjects | |
Online Access | Get full text |
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Summary: | Lannotinidine G is a unique Lycopodium alkaloid that features a tricyclic [6/6/6] core with 3 contiguous stereocenters and a 1,3-diene moiety in addition to a 7-membered lactone. Herein, we disclose our efforts toward the synthesis of this natural product, which achieved the construction of the aza-tricyclic core with the correct configuration at its three stereocenters. Key features of our strategy include a highly diastereoselective Fráter–Seebach alkylation and Corey–Chaykovsky type epoxide formation, an unusual aziridinium-mediated ring contraction for the formation of the piperidine moiety, and a regioselective dienyne metathesis. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1523-7060 1523-7052 |
DOI: | 10.1021/acs.orglett.4c00791 |