Isoflavone diglycosides from Glycosmis pentaphylla.
Six new apiosyl-(1-->6)-glucosyl isoflavones (1-6) and four known ones were isolated from the stems of Glycosmis pentaphylla. The structures of the new glycosides are 3',7-dihydroxy-4',5,6-trimethoxyisoflavone 7-O-(5-O-trans-p-coumaroyl)-beta-D-apiofuranosyl-(1-->6)-beta-D-glucopyranoside (1), 2',7-dihydroxy-4',5',5,6-tetramethoxyisoflavone 7-O-(5-O-trans-p-coumaroyl)-beta-D-apiofuranosyl-(1-->6)-beta-D-glucopyranoside (2), 2',7-dihydroxy-4',5',5,6-tetramethoxyisoflavone 7-O-beta-D-apiofuranosyl-(1-->6)-beta-D-glucopyranoside (3), 7-hydroxy-4',8-dimethoxyisoflavone 7-O-beta-D-apiofuranosyl-(1-->6)-beta-D-glucopyranoside (4), 7-hydroxy-4',6-dimethoxyisoflavone 7-O-beta-D-apiofuranosyl-(1-->6)-beta-D-glucopyranoside (5), and 4',5-dihydroxy-3',7-dimethoxyisoflavone 4'-O-beta-D-apiofuranosyl-(1-->6)-beta-D-glucopyranoside (6). Their structures were established primarily by NMR experiments and chemical methods.
Wang
Junsong
J
State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People's Republic of China.
Yang
Xianwen
X
Di
Yingtong
Y
Wang
Yuehu
Y
Shen
Yuemao
Y
Hao
Xiaojiang
X
D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification*; D007529:Isoflavones / Q000737:chemistry* / Q000302:isolation & purification*; D015394:Molecular Structure; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D027821:Rutaceae / Q000737:chemistry*
D004365:Drugs, Chinese Herbal; D006027:Glycosides; D007529:Isoflavones