Citation: Hong Wei LIU, Hisayoshi KOBAYASHI, Ge Xia QU, Xin Sheng YAO. A New Spirostanol Saponin from Dioscorea futshauensis[J]. Chinese Chemical Letters, ;2001, 12(7): 613-616. shu

A New Spirostanol Saponin from Dioscorea futshauensis

1.
Department of Natural Products Chemistry, Shenyang Pharmaceutical University, Shenyang 110015;
2.
Institute of Molecular & Cellular Biosciences, The University of Tokyo, Tokyo, Japan 113

Received Date: 19 December 2000

Fund Project: We appreciate the kind help of Prof. Qishi Sun in Shenyang Pharmaceutical University for his identification of the plant material. Thanks are also extented to Associate Prof. Naili Wang and doctor Feng Qiu for their advices and assistance.

A new spirostanol saponin presenting strong activity of inducing morphological deformation of Pyricularia oryzae mycelia was isolated from Dioscorea futshauensis R. Kunth by bioactivity-guided fractionation. The structure was established as (25S)-spirost-5-en-3β,27-diol-3-O-[α-L-rhamnopyranosyl (1→2)-β-D -glucopyranosyl (l→3)]-β-D-glucopyranoside on the basis of chemical evidences and spectral analysis, especially by 2D-NMR techniques.
- New spirostanol glycoside,
- Dioscorea futshauensis,
- Pyricularia oryzae.
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