文摘
Three naphthopyrone glucosides, cassiaside (1), rubrofusarin-6-O-β-D-gentiobioside (2), and toralactone-9-O-β-D-gentiobioside (3), were isolated from the BuOH-soluble extract of the seeds ofCassia tora as active constituents, using an,in vitro bioassay based on the inhibition of advanced glycation end products (AGEs) to monitor chromatographic fractionation. The structures of1- were determined by spectroscopic data interpretation, particularly by extensive 1D and 2D NMR studies. All the isolates (1-) were evaluated for the inhibitory activity on AGEs formationin vitro.