Pregnane Glycoside, Lignan Glycosides, Triterpene Glycosyl Ester and Flavonoid Glycosides from Rubus amabilis

Abstract

Two new compounds, 3-O-β-D-glucopyranosyl-3β, 15α-dihydroxypregn-5-en-20-one (1) and (-)-secoisolariciresinol-O-α-L-rhamnopyranoside (2), along with six known compounds (3 - 8), have been isolated from the aerial parts of Rubus amabilis Focke. The structures of the new compounds were elucidated mainly by spectroscopic methods and some chemical transformations.

Key words

Rubus amabilis - Rosaceae - pregnane glycoside - lignan glycosides - triterpene glucosyl ester - flavonoid glycosides

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