TY - JOUR
T1 - A new flavonol galloylrhamnoside and a new lignan glucoside from the leaves of Koelreuteria henryi Dummer
AU - Li, Zong-Huei
AU - Chiang, Yuan Hsiang
AU - Chen, Chin Hui
AU - Chen, Pi Yu
AU - Lee, Ching Kuo
N1 - Funding Information:
Acknowledgments This research was supported by grants from the National Science Council of the Republic of China. We are grateful to Ms. Shwu-Huey Wang for the NMR data acquisition at the Instrumentation Center of Taipei Medical University.
PY - 2009/4
Y1 - 2009/4
N2 - A new flavonol galloylrhamnoside, kaempferol 3-O-(2′,3′-di-O- galloyl)-α-l-rhamnopyranoside, and a new lignan glycoside, hinokinin 7-O-β-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.
AB - A new flavonol galloylrhamnoside, kaempferol 3-O-(2′,3′-di-O- galloyl)-α-l-rhamnopyranoside, and a new lignan glycoside, hinokinin 7-O-β-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.
KW - Flavonol galloylrhamnoside
KW - Koelreuteria henryi
KW - Lignan glycoside
KW - Radical-scavenging effect
KW - Sapindaceae
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U2 - 10.1007/s11418-009-0314-z
DO - 10.1007/s11418-009-0314-z
M3 - Article
C2 - 19184275
AN - SCOPUS:60849133302
SN - 1340-3443
VL - 63
SP - 209
EP - 214
JO - Journal of Natural Medicines
JF - Journal of Natural Medicines
IS - 2
ER -