Glycosides from Muscaricomosum. 5. Structure of muscaroside B

Abstract

A further component of the glycoside mixture extracted from the bulbs of Muscaricomosum has been completely characterized by chemical degradative study and spectral investigation. This glycoside, 2, termed muscaroside B, possesses an α-L-arabinofuranosyl(1 → 2)-α-L-arabinopyranosyl(1 → 3)[α-L-rhamnopyranosyl(1 → 2)]-β-D-glucopyranosyl(1 → 2)-α-L-arabinopyranosyl(1 → 6)-β-D-glucopyranosyl chain linked at the 3-position of eucosterol.