Total Synthesis and Stereochemical Revision of Acortatarins A and B

[摘要]：A first total synthesis of acortatarins A, B, and an enantiomer of the proposed structure of acortatarin B Is described by using readily available D-sugars. This convergent total synthesis revealed the revision of the absolute configuration of acortatarin A and structural revision of acortatarin B. The key steps involved are regioselective epoxide opening with deprotonated 2,5-disubstituted pyrrole and spiroketalization.

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