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Short, Divergent, and Enantioselective Total Synthesis of Bioactive ent-Pimaranes.


ABSTRACT: We present the first total synthesis of eight ent-pimaranes via a short and enantioselective route (11-16 steps). Key features of the divergent synthesis are a Sharpless asymmetric dihydroxylation, a Brønsted acid catalyzed cationic bicyclization, and a mild Rh-catalyzed arene hydrogenation for rapid access to a late synthetic branching point. From there on, selective functional group manipulations enable the synthesis of ent-pimaranes bearing different modifications in the A- and C-rings.

SUBMITTER: Plangger I 

PROVIDER: S-EPMC7613685 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature

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Short, Divergent, and Enantioselective Total Synthesis of Bioactive <i>ent</i>-Pimaranes.

Plangger Immanuel I   Wurst Klaus K   Magauer Thomas T  

Organic letters 20220928 39


We present the first total synthesis of eight <i>ent</i>-pimaranes via a short and enantioselective route (11-16 steps). Key features of the divergent synthesis are a Sharpless asymmetric dihydroxylation, a Brønsted acid catalyzed cationic bicyclization, and a mild Rh-catalyzed arene hydrogenation for rapid access to a late synthetic branching point. From there on, selective functional group manipulations enable the synthesis of <i>ent</i>-pimaranes bearing different modifications in the A- and  ...[more]

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