Some remarkable reactions of the diterpene eriocephalin: Neo-clerodane derivatives with insect antifeedant activity
作者:María C. de la Torre、Gema Domínguez、Benjamín Rodríguez、Aurea Perales、Monique S.J. Simmonds、Wally M. Blaney
DOI:10.1016/s0040-4020(01)89361-3
日期:1994.1
Base-catalyzed reaction of the neo-clerodane diterpenoid eriocephalin (1) gave the derivatives 3 and 4. The formation of these compounds implies an elimination of the C-19 carbon atom of 1 as formaldehyde by a reaction and, in the case of 4, subsequent reaction of this formaldehyde with the 18-alkoxide intermediate followed by an intramolecular and stereoselective 1,4-addition of the resulting C-18-oxa-methylene