Studies on chemical constituents of Galeopsis bifida / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the chemical constituents of Galeopsis bifida.</p><p><b>METHOD</b>Various chromatographic techniques were employed for isolation and purification of the constituents. The structures were elucidated by chemical and spectral analyses.</p><p><b>RESULT AND CONCLUSION</b>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.</p>