Pentasaccharide resin glycosides from Ipomoea cairica and their cytotoxic activities
作者:Bangwei Yu、Jianguang Luo、Junsong Wang、Dongming Zhang、Shishan Yu、Lingyi Kong
DOI:10.1016/j.phytochem.2013.07.006
日期:2013.11
Six partially acylated pentasaccharide resin glycosides, cairicosides A-F, were isolated from the aerial parts of Ipomoea cairica. These compounds were characterized as a group of macrolactones of simonic acid A, partially acylated with different organic acids. The lactonization site of 11S-hydroxyhexadecanoic acid (jalapinolic acid) was bound to the second saccharide moiety at C-3 in cairicosides A-E, while at C-2 in cairicoside F. Structures were established by spectroscopic and chemical methods. Compounds cairicosides A-E exhibited moderate cytotoxicity against a small panel of human tumor cell lines with IC50 values in the range of 4.28-14.31 mu M. (C) 2013 Elsevier Ltd. All rights reserved.