Studies on the Constituents of Medicinal Plants. XX. The Constituent of the Vines of Menispermum dauricum DC.

Abstract

Menisdaurin, a new nitrile glucoside was isolated from the vines of Menispermum dauricum DC (Menispermaceae). The structure I, (Z)-6 (S)-(β-D-glucopyranosyloxy)-4 (R)-hydroxy-2-cyclohexene-Δ^{1, α}-acetonitrile has tentatively proposed for menisdaurin and the structure III, (Z)-4 (R)-6 (S)-dihydroxy-2-cyclohexene-Δ^{1, α}-acetic acid γ-lactone for menisdaurilide, the hydrolysis product of menisdaurin, on the basis of the chemical and spectral evidences.