Study of phenylpropanoids from Tripterygium hypoglaucum
This paper aimed to study phenylpropanoids of Tripterygium hypoglaucum.Twenty-four compounds were isolated from the 70%EtOH extracts of T.hypoglaucum by silica gel column chromatography,reversed phase column chromatography,gel column chromatography,preparative thin layer chromatography,and semi-preparative high performance liquid chromatography.Compounds 1-3 were three new phenylpropionds.Their structures were identified by ultraviolet spectrum,infrared spectroscopy,high resolution electrospray ionization mass spectrometry,and nuclear magnetic resonance data as:threo-2-(4-hydroxy-3-methoxyphenoxy)-3-(4-hydroxy-3-methoxyphenyl)-1,3-propanedol(1),erythro-2-(4-hydroxy-3-methoxyphenoxy)-3-(4-hydroxy-3-methoxyphenyl)-1,3-propanediol(2),erythro-3-(4-hydroxy-3,5-dimethoxyphenyl)-3-ethoxypropane-1,2-propanediol(3).Compounds 4-6,9,14,15,18,19,and 21-24 were obtained from Tripterygium genus for the first time.The cytotoxicity assay of cancer cells suggested that compound 20 displayed cytotoxicity on the breast cancer 4T1 cells whose 50%inhibitory concentra-tion was 125.60 μmol L-1.