Studies on the constituents of Hedera rhombea Bean. IV. On the hederagenin glycosides

Article abstract of DOI:10.1248/cpb.33.3473

On the basis of chemical and physicochemical evidence, the structures of two new hederagenin bisdesmosides, named Kizuta saponins K₈ (X) and K₁₁ (I), which were isolated from the stem and bark of Hedera rhombea Bean (Araliaceae), were established to be as follows: X, 3-O-α-L-arabinopyranosyl-hederagenin 28-O-α-L-rhamnopyranosyl-(1 →4)-6-O-acetyl-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester; I,3-O-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl-hederagenin 28-O-α-L-rhamnopyranosyl(1→4)-6-O-acetyl-β-D-glucopyranosyl-(1→6)-β-D -glucopyranosyl ester. A glucoside mixture (XIII) was considered to be a mixture of the β-D glucopyranosides of campesterol (trace), stigmasterol and β-sitosterol based on chemical and physicochemical evidence.

Full text of DOI:10.1248/cpb.33.3473

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