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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.