李慶國Lee TH; Chiang YH; Chen CH; Chen PY; Lee CK;2026-05-212026-05-212008https://203.71.86.71/handle/123456789/23390A new flavonol galloylrhamnoside, kaempferol 3-O-(2'',3''-di-O-galloyl)-alpha-L: -rhamnopyranoside, and a new lignan glycoside, hinokinin 7-O-beta-D: -glucopyranoside were isolated from the leaves of Koelreuteria henryi, along with 18 known compounds, including six flavonol glycosides (3-8), three lignans (9-11), four chlorophyll derivatives (12-15), two steroids (16, 17), and three aromatic compounds (18-20). The structures were determined on the basis of spectral analysis and chemical evidence. The scavenging effect of 1-8 and 20 on the stable free radical 1,1-diphenyl-2-picrylhydrazyl was examined. Compounds 1, 5, 6, and 20 showed more potent activity than that of trolox.en-US藥學系期刊論文article