Studies on the Constituents of Aster tataricus L. f. I. : Structures of Shionosides A and B : Monoterpene Glycosides Isolated from the Root

Abstract

Two new monoterpene glycosides shionosides A and B were isolated from root of Aster tataricus L. f. (Compositae), along with shionone, epifriedelinol and phytosterol glucosides.The structures of the shionsides were elucidated based on chemical and spectral evidence as the β-D-apiofuranosyl-(1→6)-β-D-glucopyranoside (shionoside A) and the α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranoside (shionoside B) of L-endo-camphanol[(1R, 2R, 4S)-3, 3-dimethyl-bicyclo-[2.2.1]hept-2-yl-methanol].