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Updated: May 28, 2026

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones
Published on: February 7, 2019
Synthesis of a platform to access bistramides and their analogues
Malgorzata Commandeur1, Claude Commandeur, Janine Cossy
1Laboratoire de Chimie Organique Associé au CNRS, ESPCI ParisTech, 10, rue Vauquelin, 75231 Paris Cedex 05, France.
Abstract:
The platform C14-C40, which can be used to prepare bistramide C and 39-oxobistramide K, was synthesized in 19 steps with an overall yield of 6.2%. Furthermore, the chemoselective reduction of the ketone at C-39 was performed giving an easy access to bistramides A, B, D, K, and L. Finally, the versatility of the synthesis of the C14-C40 fragment can allow the preparation of a large variety of stereoisomers to produce bistramide analogues.
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