Structure of Carbohydrate Moiety of Asterosaponin A
Open Access
- 1 January 1972
- journal article
- Published by Oxford University Press (OUP) in Agricultural and Biological Chemistry
- Vol. 36 (13) , 2453-2457
- https://doi.org/10.1271/bbb1961.36.2453
Abstract
Partial acid hydrolysis of asterosaponin A, a steroidal saponin, afforded two new disaccharides in addition to O-(6-deoxy-α-D-glucopyranosyl)-(1→4)-6-deoxy-D-glucose which has been characterized in the preceding paper.1) The formers were demonstrated as O-(6-deoxy-α-D-galactopyranosyl)-(1→4)-6-deoxy-D-glucose and O-(6-deoxy-α-D-galactopyranosyl)-(1→4)-6-deoxy-D-galactose, respectively. Accordingly, the structure of carbohydrate moiety being composed of two moles each of 6-deoxyDo-galactose and 6-deoxy-D-glucose, was established as O-(6-deoxy-α-D-galactopy-ranosyl)-(1→4)-O-(6-deoxy-α-D-galactopyranosyl)-(1→4)-O-(6-deoxy-α-D-glucopyranosyl)-(1→4)-6-deoxy-D-glucose, which is attached to the steroidal aglycone through an O-acetal glycosidic linkage.Keywords
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