Glycosides from Muscaricomosum. 5. Structure of muscaroside B

Abstract
A further component of the glycoside mixture extracted from the bulbs of M. comosum was completely characterized by chemical degradative study and spectral investigation. This glycoside, termed muscaroside B, possesses an a-L-arabinofuranosyl(1 .fwdarw. 2)-.alpha.-L-arabinopyranosyl(1 .fwdarw. 3)[.alpha.-L-rhamnopyranosyl(1 .fwdarw. 2)]-.beta.-D-glucopyranosyl(1 .fwdarw. 2)-.alpha.-L-arabinopyranosyl(1 .fwdarw. 6)-.beta.-D-glucopyranosyl chain linked at the 3-position of eucosterol.