Flavonoid and Steroids from Polygonum viscosum

摘要

Repeated chromatographic separation and purification of the n -hexane-ethyl acetate (3:1) extract of aerial parts of Polygonum viscosum provided a flavonoid- ternatin ( 1 ) and two steroids- stigmasterol ( 2 ) and stigmasta-4,22-dien-3-one ( 3 ). The structure of these compounds were determined on the basis of extensive NMR and other spectroscopic techniques and comparison with published data. The identity of steroids 2 and 3 was confirmed by co-TLC with authentic sample. Bangladesh Pharmaceutical Journal 19 (2): 166-169, 2016