Two novel tetrairidoid glucosides from Dipsacus asper.
[reaction: see text] Two new iridoid glucoside tetramers, dipsanosides A (1) and B (2), the first-reported iridoid tetramers with four glucosides, were isolated from Dipsacus asper. Their structures were determined by analysis of 1D and 2D NMR data as well as by comparison with model compounds. Their cytotoxicities were tested, but neither of them showed obvious activity.
Tian
Xiao-Yan
XY
Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine (Ministry of Education), Peking Union Medicinal College, Beijing, China.
Wang
Ying-Hong
YH
Yu
Shi-Shan
SS
Fang
Wei-Shuo
WS