Studies on the Constituents of Japanese and Chinese Crude Drugs. VII. On the Constituents of the Roots of Sophora subprostrata CHUN et T. CHEN, (2), and Sophora japonica L. (1).

Abstract

In the previous paper, it was reported that two crystalline compounds, tentatively named B₁ and C₁, were isolated from Sophora subprostrata in poor yield. In the present wark, two new crystalline compounds were obtained from the roots of Sophora japonica in good yields and named B₂ and C₂, respectively. The chemical structures of these four compounds were established as follows : B₁ : l-Maackiain-mono-β-D-glucoside, C₁ : l-pterocarpin, B₂ : d-maackiain-mono-β-D-glucoside and C₂ : dl-maackiain. B₁ seems to be identical with trifolirhizin which was recently reported by J.B. Son Bredenberg et al. B₂ is one of the diastereomers of trifolirhizin and so the name sophojaponicin was proposed.