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Updated: Nov 2, 2025

Preparation of Enantiopure Non-Activated Aziridines and Synthesis of Biemamide B, D, and epiallo-Isomuscarine
Published on: June 13, 2022
Enantioselective total synthesis of (-)-myrifabral A and B
Tyler J Fulton1, Anthony Y Chen1, Michael D Bartberger2
1Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena CA 91125 USA stoltz@caltech.edu.
Abstract:
A catalytic enantioselective approach to the Myrioneuron alkaloids (-)-myrifabral A and (-)-myrifabral B is described. The synthesis was enabled by a palladium-catalyzed enantioselective allylic alkylation, that generates the C(10) all-carbon quaternary center. A key N-acyl iminium ion cyclization forged the cyclohexane fused tricyclic core, while vinyl boronate cross metathesis and oxidation afforded the lactol ring of (-)-myrifabral A. Adaptation of previously reported conditions allowed for the conversion of (-)-myrifabral A to (-)-myrifabral B.
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