Polyprenylated isoflavanone and isoflavonoids from Ormosia henryi and their cytotoxicity and anti-oxidation activity
作者:Shixiu Feng、Jing Hao、Zhifang Xu、Tao Chen、Samuel X. (Shengxiang) Qiu
DOI:10.1016/j.fitote.2011.10.007
日期:2012.1
A rare naturally-occurring polyprenylated isoflavanone, designated ormosinol (1), and a new isoflavonoid glycoside, named ormosinoside (2), along with 21 known compounds were isolated from the root bark of Ormosia henryi Prain. The structures of compounds 1 and 2 were determined as 5,7,2',4'-tetrahydroxyl-6,8,5'-tri-( gamma,-gamma-dimethylallyl)isoflavanone and isoprunetin-7-O-beta-D-xylopyranosyl-(1 -> 6)-beta-D-glucopyranoside on the basis of a combination of 1D-, 2D-NMR and mass spectroscopic measurements. Compound 1 showed significant anti-oxidation activity against DPPH radicals (IC50 28.5 mu M) and cancer cell line (A549, LAC, and HepG2) growth inhibitory activity with IC50 ranging from 425 to 7.09 mu M, while compound 2 found to be inactive to both testing systems. (C) 2011 Elsevier B.V. All rights reserved.