Oxirane-opening reactions of some 6,19-oxygenated 4α,18- epoxy-neo-clerodanes isolated from Teucrium. Biogenesis and antifeedant activity of their derivatives
作者:Benjamín Rodríguez、María C. de la Torre、Aurea Perales、Peter Y. Malakov、Georgy Y. Papanov、Monique S.J. Simmonds、Wally M. Blaney
DOI:10.1016/s0040-4020(01)80701-8
日期:1994.5
functionality at C-6 and its stereochemistry determine the course of the reaction and affect the retention or inversion of the configuration at the C-4 asymmetric centre. In the light of these reactions, a hypothesis on the biogenetic pathway of some neo-clerodane diterpenoids isolated from Teucrium species is proposed. Moreover, useful criteria for establishing the stereochemistry at C-4 in these derivatives