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Updated: Jun 13, 2026

Functionalized Spirocyclic Heterocycle Synthesis and Cytotoxicity Assay
Published on: February 9, 2021
Total syntheses of (+)-fawcettimine and (+)-lycoposerramine-B
Yasunari Otsuka1, Fuyuhiko Inagaki, Chisato Mukai
1Division of Pharmaceutical Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
Abstract:
The total synthesis of (+)-fawcettimine was completed in a highly stereoselective manner starting from the oxatricyclo[7.3.0.0(1,5)]dodecanedione derivative. The crucial step in this total synthesis involves the efficient construction of the azonane framework by the intramolecular Mitsunobu reaction. Furthermore, the first total synthesis of (+)-lycoposerramine-B was also accomplished via the common synthetic intermediate.

