Saponin And Sapogenol. XLVIII. On The Constituents Of The ... - PubMed

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Abstract

Following the characterization of licorice-saponins A3 (2), B2 (3), and C2 (4), the chemical structures of licorice-saponins D3 (5), E2 (6), F3 (7), G2 (8), H2 (9), J2 (10), and K2 (11), seven of the ten oleanane-type triterpene oligoglycosides isolated from the air-dried roots of Glycyrrhiza uralensis Fischer collected in the northeastern part of China, were investigated. On the basis of chemical and physicochemical evidence, the structures of licorice-saponins D3, E2, F3, G2, H2, J2, and K2 have been determined to be expressed as 3 beta-[alpha-L-rhamnopyranosyl(1-->2)-beta-D-glucuronopyranosyl(1-- >2)-beta-D-glucuronopyranosyloxy]-22 beta-acetoxyolean-12-en-30-oic acid (5), 3-O-[beta-D-glucuronopyranosyl(1-->2)-beta-D- glucuronopyranosyl]glabrolide (6), 3-O-[alpha-L-rhamnopyranosyl(1-->2)-beta-D-glucuronopyranosyl(1--> 2)-beta-D-glucuronopyranosyl]-11-deoxoglabrolide (7), 24-hydroxyglycyrrhizin (8), 3-O-[beta-D-glucuronopyranosyl(1-->2)-beta- D-glucuronopyranosyl]liquiritic acid (9), 24-hydroxy-11-deoxoglycyrrhizin (10), and 3 beta-[beta-D- glucuronopyranosyl(1-->2)-beta-D-glucuronopyranosyloxy]-24-+ ++hydroxyoleana- 11,13(18)-dien-30-oic acid (11), respectively.

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