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[Studies on chemical constituents of Cuscuta chinensis]
Min Ye1, Yu-ning Yan, Liang Qiao
1Beijing University of Chinese Medicine, Beijing 100029, China.
Objective:
To study the chemical constituents of the seeds of Cuscuta chinensis.
Method:
The separation was carried out by polyamide and silica gel chromatography, and the compounds were identified by means of physico-chemical and spectroscopic methods.
Results:
Eight compounds were isolated from the plant and identified as quercetin 3-O-beta-D-galactoside-7-O-beta-D-glucoside (I), quercetin 3-O-beta-D-apiofuranosyl-(1-->2)-beta-D-galactoside (II), hyperoside (III), isorhamnetin (IV), kaempferol (V), quercetin (VI), d-sesamin (VII) and 9(R)-hydroxy-d-sesamin (VIII).
Conclusion:
Compounds IV and VII were isolated from Cuscuta for the first time, and I, II and VIII were characteristic constituents for this vegetable drug.