Studies on the Chemical Constituents of Cuscuta chinensis
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The genus Cuscuta (Convolvulaceae) consists of about 175 species, which is distributed widely in the warm temperate regions in the world . The edible seeds of Cuscuta chinensis Lam., a traditional Chinese medicine, have been reported to be used for the treatment of autoimmune diseases [2, 3], improving the differentiation and proliferation of osteoblasts [4, 5], and preventing and treating cardiovascular diseases . Previous phytochemical investigations on C. chinensis have led to the isolation of a series of natural products, including lignans, flavonoids, alkaloids, and steroids [7, 8, 9, 10, 11].
In this study, nine compounds were isolated from the whole plants of C. chinensis. Their structures were established by extensive analyses of their NMR spectra and further determined by comparison of their NMR data with those reported in the literature. These isolates were classified into several types, including a sesquiterpenoid (1), four triterpenoids (2–5), three lignans (6–8),...
KeywordsCDCl3 MeOH MeCN CD3OD Me2CO
This study was supported by the Program for New Century Excellent Talents in University, State Education Ministry of China (NCET-2008-0224), the National Natural Science Foundation of China (No. 31200258), and the
Fundamental Research Funds for the Central Universities (HUST0118-514014), which are gratefully acknowledged.
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