Coumarinolignans from the seeds of Annona squamosa Linn.

Abstract

Phytochemical investigations of Annona squamosa seeds have led to the isolation of three lignans consisting of coumarin moiety, cleomiscosin A(1), cleomiscosin B(2) and cleomiscosin C(3). Their structures were arrived at by detailed spectroscopic analysis. Cleomiscosin A and cleomiscosin B are position isomer.