TWO ISOFLAVONOID GLYCOSIDES FROM DERRIS SCANDENS

AIM: To investigate the chemical constituents of the aerial parts of Derris Scandens. METHODS: To isolate chemical constituent, solvent extraction together with column chromatography were used. IR, UV, MS, NMR and chemical methods were used to determine the structure of the isolated constituents. RESULTS: The structures of the two constituents obtained were elucidated as 4′-methoxy-isoflavone-7-O-［α-L-rhamnopyranosyl(1→6)］-β-D-glucopyranoside(I) and 4′,8-dimethoxy-isoflanvone-7-O-［α-L-rhamnopyranosyl(1→6)］-β-D-glucopyranoside(II) which were named derriscanoside A and derriscanoside B respectively. CONCLUSION: Compound (I) and compound (II) are two new isoflavonoid glycosides.