Objective: To study the chemical constituents from the leaves of Cassia angustifolia.
Methods: Compounds were isolated and repeatedly purified by chromatographic techniques on silica gel column. Their structures were elucidated by chemical and spectral methods.
Results: eight compounds were isolated from the leaves of Cassia angustifolia, and identified as tinnevellin glycoside(I), isorhamnetin-3-O-beta-gentiobioside(II), apigenin-6,8-di-C-glycoside(III), emodin-8-O-beta-D-glucopyranoside(IV), kaempferol(V), aloe emodin(VI), D-3-O-methylinositol(VII), sucrose(VIII).
Conclusion: Compounds III, VII and VIII are isolated from the plant for the first time.