PRENYLATED LIGNANS FROM HAPLOPHYLLUM-PTILOSTYLUM

Abstract

In addition to previously isolated coumarins and lignans, we have obtained one new aryltetralin lignan and three new prenylated diarylbutyrolactone lignans from the aerial parts of Haplophyllum ptilostylum. The structures of the new compounds were established by (1)HNMR,(13)CNMR (BE and DEFT), COSY, HETCOR, COLOC and selective INEPT experiments.