Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
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Three New Saponins from the Fresh Rhizomes of Polygonatum kingianum
He-Shui Yu, Jie Zhang, Li-Ping Kang, Li-Feng Han, Peng Zou, Yang Zhao, Cheng-Qi Xiong, Da-Wei Tan, Xin-Bo Song, Kate Yu, Bai-Ping Ma
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Keywords: Polygonatum kingianum, spirostanol saponin, identification, stereoisomeric
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2009 Volume 57 Issue 1 Pages 1-4

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Abstract

Further studies on the fresh rhizomes of Polygonatum kingianum led to the isolation of one new spirostanol saponin (25R)-kingianoside G (1), and two pairs mixture of 25R and 25S stereoisomeric spirostanol saponins (25R, S)-pratioside D1 (2a, 2b) and (25R, S)-kingianoside A (3a, 3b), among them 2b and 3b were new spirostanol saponins, together with another two known compounds, disporopsin (4) and daucosterol (5). The structures of the new saponins were determined by detailed analysis of their 1D and 2D NMR spectra, and chemical evidences.

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© 2009 The Pharmaceutical Society of Japan
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