Study on chemical constituents of Cuscuta chinensis Lam / 中国药学杂志

ABSTRACT

OBJECTIVE: To study the chemical constituents of the aerial parts of Cuscuta chinensis Lam. METHODS: The chemical constituents of Cuscuta chinensis Lam were isolated and purified by silica gel, LH-20 column chromatography and preparation HPLC, etc. Their structures were identified by means of spectra comparison with authentic samples. RESULTS: Ten compounds were obtained and identified as 5,3'-dihydroxy-3,6,7,4'-tetramethoxy flavone (I), 5,3'-dihydroxy-6,7,4'-tritermethoxy flavone (II), 5,7,3'-triterhydroxy-6,4'-dimethoxy flavone (III), quercetin (IV), hyperoside (V), kaempferol (VI), 5,7,3'-triterhydroxy-4'-methoxy flavone (VII), luteolin (VIII), 3-methoxy-chrysoeriol-4'-O-β-D-glucoside (IX), and luteolin-7-O-β-D-glucopyranoside (X). CONCLUSION: Compounds I, II, III, VII, IX and X are isolated from this plant for the first time.