Cardiac glycosides from antiaris toxicaria with potent cardiotonic activity

Li Shian Shi, Yu Ren Liao, Ming Jai Su, An Sheng Lee, Ping Chung Kuo, Amooru G. Damu, Sheng Chu Kuo, Han Dong Sun, Kuo Hsiung Lee, Tian Shung Wu

研究成果: Article同行評審

48 引文 斯高帕斯(Scopus)


An ethanolic extract of Antiaris toxicaria trunk bark showed potent in vitro cardiotonic effect on isolated guinea pig atria. Bioassay-guided fractionation of the extract led to identification of nine new cardiac glycosides (1-9, named antiarosides A-I), antiarotoxinin A (10), and 18 known compounds. Their structures were established using MS and NMR spectroscopic studies, including homonuclear and heteronuclear correlation experiments. The ability of these cardiotonic compounds to produce positive inotropic action and their safety indexes were examined in comparison with those of ouabain, a classical inhibitor of Na+/K+-ATPase. Malayoside (23) was nearly equipotent and had a similar safety index to ouabain in guinea pig atria. However, the maximal positive inotropic effect and safety index of 23 in papillary muscle were better than those of ouabain. An electrophysiological recording showed that 23 inhibited the sodium pump current in a concentration-dependent manner.

頁(從 - 到)1214-1222
期刊Journal of Natural Products
出版狀態Published - 2010 7月 23

All Science Journal Classification (ASJC) codes

  • 分析化學
  • 分子醫學
  • 藥理
  • 藥學科學
  • 藥物發現
  • 補充和替代醫學
  • 有機化學


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