A New Furostanol Saponin from Dioscorea futshauensis  

作　　者：Hong Wei LIU Ge Xia QU Xin Sheng YAO 

机构地区：[1]Department of Natural Products Chemistry,Shenyang Pharmaceutical University,Shenyang 110015

出　　处：《Chinese Chemical Letters》2002年第3期241-244,共4页中国化学快报(英文版)

基　　金：We appreciate the kind help of Prof. Qishi Sun in Shenyang Pharmaceutical University for his identification of the plant material. Thanks are also extended to Prof. Naili Wang and Doctor Feng Qiu for their advices and assistance.;References

摘　　要：A new furostanol saponin presenting moderate bioactivity of inducing morphological deformation of Pyricularia oryzae mycelia was isolated from Dioscorea futshauensis R.Kunth by bioactivity-guided fractionation. The structure was established as 26-O-b-D-glucopyranosyl-3b, 26-diol-23(S)-methoxyl-(25R)-furost-5,20 (22)-diene-3-O-[a-L-rhamnopyranosyl (12)-b-D- glucopyranosyl (13)]-b-D-glucopyranoside on the basis of chemical evidencesand spectral analysis, especially by 2D-NMR techniques.A new furostanol saponin presenting moderate bioactivity of inducing morphological deformation of Pyricularia oryzae mycelia was isolated from Dioscorea futshauensis R.Kunth by bioactivity-guided fractionation. The structure was established as 26-O-b-D-glucopyranosyl-3b, 26-diol-23(S)-methoxyl-(25R)-furost-5,20 (22)-diene-3-O-[a-L-rhamnopyranosyl (12)-b-D- glucopyranosyl (13)]-b-D-glucopyranoside on the basis of chemical evidencesand spectral analysis, especially by 2D-NMR techniques.

关 键 词：Furostanol glycoside Dioscorea futshauensis Pyricularia oryzae. 

分 类 号：O629[理学—有机化学]