Chemical constituents from leaves of Sterculia foetida

Abstract

Objective: To study the chemical constituents from the leaves of Sterculia foetida. Method: Compounds were isolated by chromatographic techniques. Their structures were elucidated by spectroscopic methods. Result: Eight compounds were identified as 5, 7, 8-tetrahydroxy-4′-methoxyflavone-8-O-β-D- glucoside (1), 5,7,8-tetrahydroxy-4′-methoxyflavone-7-O-β-D- glucoside(2), quercetin-3-O-β-D-glucoside (3), apigenin-6,8-di-C-β-D- glucoside (4), puerarin (5), 5,7,8,3′-tetrahydroxy-4′-methoxyflavone (6), 5,7,8-tetrahydroxy-3′,4′-dimethoxyflavone (7), 5,7,8-tetrahydroxy-4′-methoxyflavone (8). Conclusion: Compounds 1, 2 and 4-8 were isolated from this plant for the first time.