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1. Construction of AE ring system for the C19-diterpenoid alkaloids with a 5β-hydroxyl group

Author

Yang, Zhan-Kun, Chen, Qiao-Hong, and Wang, Feng-Peng

Subjects
*DITERPENES, *HYDROXYL group, *CYCLIC compounds, *MANNICH reaction, *ASYMMETRIC synthesis, *NUCLEOPHILIC reactions, *ALKALOIDS
Abstract

Abstract: An AE azabicyclic fragment, with a β-hydroxyl group at C-5 and a substituent at C-1, of the C19-diterpenoid alkaloids, was synthesized. The key reactions include an intramolecular Claisen-type condensation, double Mannich reaction, and stereoselective nucleophilic addition of carbonyl group with the assistance of steric effect of 1β-substituent. [Copyright &y& Elsevier]

Published
2011
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