The leaves of Ochna obtusata (Ochnaceae) afforded two new biflavonoids together with the known compounds ochnaflavone, kaempferol 3-O-glucoside, and quercetin 3-O-glucoside. The new biflavonoids were characterized as 2,3-dihydroochnaflavone 7-O-methyl ether (1) and 2,3-dihydroochnaflavone (2) by spectral and chemical transformation studies.
作者:K. V. Rao、K. Sreeramulu、C. Venkata Rao、D. Gunasekar、M. T. Martin、B. Bodo
DOI:10.1021/np9604590
日期:1997.6.1
The leaves of Ochna obtusata (Ochnaceae) afforded two new biflavonoids together with the known compounds ochnaflavone, kaempferol 3-O-glucoside, and quercetin 3-O-glucoside. The new biflavonoids were characterized as 2,3-dihydroochnaflavone 7-O-methyl ether (1) and 2,3-dihydroochnaflavone (2) by spectral and chemical transformation studies.