Studies on phenylpropanoids from Eleocharis dulcis and their hepatoprotective activities / 中国中药杂志

To study phenylpropanoids from Eleocharis dulcis and their hepatoprotective activities. The compounds were separated and purified from ethyl acetate part by conventional column chromatography and preparative liquid chromatography, and their structures were identified by various spectral techniques. The HL-7702 cells damage model of hepatocytes induced by APAP was used to screen and evaluate the hepatoprotective activities of these compounds. Sixteen compounds were isolated from ethyl acetate part of E. dulcis, and their structures were identified as 6'-(4″-hydroxy-3″-methoxy-phenylpropenyl)-1-(10-methoxy-phenylacetone)-1'-O-β-D-glucopy-ranoside(1), susaroyside A(2), clausenaglycoside B(3), clausenaglycoside C(4), clausenaglycoside D(5), emarginone A(6), emarginone B(7), thoreliin B(8), 4-O-(1',3'-dihydroxypropan-2'-yl)-dihydroconiferyl alcohol 9-O-β-D-glucopyranoside(9), 2-[4-(3-methoxy-1-propenyl)-2-methoxy-phenoxy]-propane-1,3-diol(10), 6'-O-(E-cinnamoyl)-coniferin(11), methyl 3-(2-O-β-D-glucopyranosyl-3,4,5,6-tetramethoxyphenyl) propanoate(12), clausenaglycoside A(13), 9-O-(E-cinnamoyl)-coniferin(14), 6'-O-(E-cinnamoyl)-syringin(15), 2'-O-(E-cinnamoyl)-syringin(16). Among them, compound 1 was a new compound. Compounds 2-16 were isolated from this plant for the first time. Among them, compounds 2 and 8 showed certain hepatoprotective activities.

Synthesis and anticancer activity study of diosgenin derivatives / 中国药学杂志

OBJECTIVE: To synthesize diosgenin derivatives and investigate their anti-tumor activities in vitro. METHODS: Designed and docked by AutoDock4.2, a series of diosgenin derivatives were selectively prepared from diosgenin. Their anti-tumor activities in vitro were evaluated for human malignant melanoma A375 cells, human lung adenocarcinoma A549 cells, human hepatoma HepG-2 cells and human myeloid leukemia K562 cells by MTT assay. RESULTS: Twelve novel compounds were synthesized and the basic structures were characterized by 1H-NMR and 13C-NMR. MTT assay showed that most of the diosgenin derivatives exhibited some anti-tumor activities. CONCLUSION: Most of the synthesized compounds had certain antitumor activity and showed no or little toxicity against the normal cells. Copyright 2012 by the Chinese Pharmaceutical Association.