title: Steroid glycosides from Polygonatum prattii.
abstract: 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.
authors.affiliation: Laboratory of Phytochemistry, Kunming Institute of Botany, Yunnan, China.
authors.forename: X C
authors.initials: XC
authors.lastname: Li
authors.forename: C R
authors.initials: CR
authors.lastname: Yang
authors.forename: H
authors.initials: H
authors.lastname: Matsuura
authors.forename: R
authors.initials: R
authors.lastname: Kasai
authors.forename: K
authors.initials: K
authors.lastname: Yamasaki
mesh_terms: 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*
chemical_list: D004365:Drugs, Chinese Herbal; D006027:Glycosides; D013256:Steroids