A new coumaronochromone derivative, sophorophenolone (1), along with 13 known compounds, l-maackiain (2), medicagol (3), 7-O-methylpseudobaptigenin (4), pseudobaptigenin (5), 7,3'-di-O-methylorobol (6), genistein (7), prunetin (8), daidzein (9), formononetin (10), Di-O-methyldaidzein (11), quercetin