Isoflavones and a Phenylethanoid from Verbascum sinaiticum

摘要

Four isoflavone glycosides, orobol,orobol 7-O-#beta#-D-glucoside and two new glycosides of known aglycones,namely,5,3',4'-trihydroxy-8-methylisoflavone 7-0-#beta#-D-glucoside, 5-hydroxy-3, 4'-dimethoxysiofiavone 7-0-#alpha#-L-rhamnoside were isolated and identified from the aerial parts of Verbascum sinaiticum.In addition,the phenylethanoid glycoside,acteoside,was also detected. The structures of all compounds were established by chromatographic and spectroscopic methods.This is the first report of isoflavones from Verbascum sinaiticum.