[Studies on chemical constituents of Galeopsis bifida].
OBJECTIVE
To investigate the chemical constituents of Galeopsis bifida.


METHODS
Various chromatographic techniques were employed for isolation and purification of the constituents. The structures were elucidated by chemical and spectral analyses.


CONCLUSIONS
Ten compounds were isolated and identified as chrysoeriol(1), 5,7-dihydroxy-3',4'-dimethoxyflavone(2), hederagenin(3), daucosterol(4), martynoside(5), ajugoside(6), 8-acetyl harpagid(7), 5,7,4'-trihydroxy-3'-methoxyflavone-7-O-beta-D-glucoside(8), 5,6,7,4'-tetrahydroxyflavone-7-O-beta-D-glucoside(9) and 5,7,3',4'-tetrahydroxyflavone-7-O-beta-D-glucoside (10). Compound 6, 7 were found from genus Galeopsis for the first time and rest of compounds were found from G. bifida for the first time.
Zhang
Yong-hong
YH
Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China.
Wang
Tao
T
Lu
Zhi-gang
ZG
Wang
Han-qing
HQ
D047309:Flavones; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D019686:Lamiaceae / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D011714:Pyrans / Q000737:chemistry / Q000302:isolation & purification*
D047309:Flavones; D005419:Flavonoids; D005960:Glucosides; D011714:Pyrans; C477173:ajugoside; C077626:8-O-acetylharpagide; C007054:chrysoeriol