The Study on the Constituents of Clematis and Akebia sp. III. The Study on the structures of Akebosides isolated from the Stem of Akebia quinata DECNE.

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The structures of three akebosides St_h, St_j, St_k were elucidated and the structures of five akebosides St_b, St_e, St_d, St_e, St_r were also suggested. Four (St_e, St_f, St_j, St_k) of them are newly isolated saponins. The chemical structures of akebosides St_k (I), St_j (VIII), St_h (XIII) were established to be 3-O-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranosyl-(1→2)-α-L-arabinopyranosyl hederagenin 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside, 3-O-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranosyl-(1→2)-α-L-arabinopyranosyl oleanolic acid 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside, and 3-O-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl hederagenin 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside, respectively. Furthermore, saponins of seed, leaf, stem, and root of A. quinata were compared.
公益社団法人日本薬学会の論文
1974-10-25