Flavonoid và lignan phân lập từ phần dưới mặt đất của cây bát giác liên ( Podophyllum tonkinense Gagnep.) thu hái ở Sa Pa, Lào Cai

Abstract

Four flavonoids (1 -A) and three lignans (5-7) were isolated from the ethanol extracts of the roots and rhizomes of Podophyllum tonkinense Gagnep. collectted in Sapa (Lao Cai, Vietnam) by chromatography. Their structures were identified by physicochemical chracterization and spectroscopic studies (NMR. UV and MS) to be quercetin (1J, rutin (2), kaempferol (2), nicotiflorin (A), a-peltatin (5). deoxypodophyllotoxin (6), and podophyllotoxin (7). Of these, compounds (4) and ("5) were found in the species Podophyllum tonkinense for the first time.