Biflavonoids from Cycas beddomei.
暂无分享,去创建一个
Chemical investigation on the constituents of the cones of Cycas beddomei has resulted in the isolation of a new biflavonoid, 2,3-dihydro-4'''-O-methyl amentoflavone, along with 2,3,2'',3''-tetrahydro hinokiflavone, 2,3,2'',3''-tetrahydro amentoflavone, 2,3-dihydro amentoflavone. The last two compounds were not reported earlier from this plant. The structure of the new compound was established by detailed analysis of its spectral (mainly 1D and 2D NMR) data.
[1] G. Cordell,et al. Cytotoxic biflavonoids from Selaginella willdenowii. , 1995, Phytochemistry.
[2] T. Ohmoto,et al. Constituents of pollen. XI. Constituents of Cryptomeria japonica D. Don. , 1983 .
[3] B. Bodo,et al. A biflavonoid from Cycas beddomei , 1998 .
[4] K. R. Markham,et al. 13C NMR studies of some naturally occurring amentoflavone and hinokiflavone biflavonoids , 1987 .
[5] H. Wagner,et al. Tetrahydroamentoflavone from nuts of Semecarpus prainii , 1981 .