A Diosgenyl Saponin Extracted from Rhizomes of Paris Polyphylla Smith: 
Structure Elucidated from NMR Data
CUI Yan, ZHANG Xiu-feng, HU Gao-fei, LIU Yang, YAN Bao-zhen
Chinese Journal of Magnetic Resonance . 2006, (3): 367 -372 . 

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