Y. Mimaki et al., CONCINNASTEOSIDE-A, A NEW BISDESMOSIDIC CHOLESTANE GLYCOSIDE FROM THESTEMS OF DRACAENA-CONCINNA, Journal of natural products, 60(11), 1997, pp. 1203-1206
A new bisdesmosidic cholestane glycoside, designated as concinnasteosi
de A, was isolated from the fresh stems of Dracaena concinna. The stru
cture was determined to be 1 beta,3 beta,16 beta-trihydroxy-5 alpha-ch
olesta-7,23-dione 1-O-alpha-L-rhamnopyranosyl 16-O-beta-D-glucopyranos
ide on the basis of spectroscopic analysis, including 2D NMR technique
s. Concinnasteoside A is believed to be the first example of a cholest
ane glycoside from a plant of the genus Dracaena.