Steroid glycosides from Polygonatum prattii.
Investigation of the roots of Polygonatum prattii afforded three new steroid glycosides, paratiosides A-C, and three new prosapogenins, pratiosides D1, E1 and F1. The latter three, which were obtained from the enzymatic hydrolysis products of a glycoside mixture, are considered to be the corresponding spirostanol glycosides of their proto-type furostanol ones in the plant. The structures of these compounds were established by chemical and spectral methods. It is noted that pratioside C possessing a 3,27-di-O-sugar chain is the first example to be isolated from a natural source.
Li
X C
XC
Laboratory of Phytochemistry, Kunming Institute of Botany, Yunnan, China.
Yang
C R
CR
Matsuura
H
H
Kasai
R
R
Yamasaki
K
K
D002240:Carbohydrate Sequence; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D015394:Molecular Structure; D013256:Steroids / Q000302:isolation & purification*
D004365:Drugs, Chinese Herbal; D006027:Glycosides; D013256:Steroids