Résumé
Objective: To investigate the chemical constituents from Tinosporae Radix (the roots of Tinospora sagittata) and their antiproliferative effects in cancer cells. Methods: The compounds were isolated and purified by means of silica gel, ODS, and Sephadex LH-20 column chromatography. The structures were identified on the basis of physicochemical properties and spectroscopic analysis. The antiproliferative effects in HL-60 and MCF-7 cells were tested by Trypan blue and MTT methods, respectively. Results: Nine compounds were isolated and their structures were identified as tetrahydropalmatine (1), tetrahydrojatrorrhizine (2), jatrorrhizine (3), palmatine (4), neoechinulin A (5), echinuline (6), N-trans-feruloyltyramine (7), uracil (8), and triethylamine hydroiodide (9). Conclusion: Among them, compounds 5, 6, 8 and 9 are isolated from the plants of Tinospora Miers for the first time. Compounds 1, 3-5 and 7 show the moderate antiproliferative effects in HL-60 cells.
Résumé
Objective: To isolate and identify the chemical constituents from the roots of Pulsatilla cernua. Methods: Compounds were isolated by various kinds of column chromatographies on silica gel, Sephadex LH-20, and recycling preparative HPLC, and their structures were elucidated by the physicochemical characters and spectral analysis. Results: Fifteen chemical constituents were obtained and identified as 5-hydroxy-2, 2-dimethyl-2H-chromene-6-carbaldehyde (1), pulsaquinone (2), aurantiamide acetate (3), stigmasterol (4), hexadecanoic acid (5), aurantiamide (6), pinoresinol (7), buplerol (8), neoechinulin A (9), (2S, 3S, 4R, 8E)-2-[(2'R)-2'-hydroxypalmitoylamino]-8-octadecene-1, 3, 4-triol (10), 5R-dihydro-5-hydroxymethyl-2(3H)-furanone (11), caffeic acid (12), methyl 6-dehydroxyl rosmarinate (13), hederagonic acid (14), and 5-hydroxy-6, 8- dimethoxycoumarin (15), respectively. Conclusion: Compound 1 is a new natural product, compounds 3, 6, 8-10, 13, and 15 are isolated from the plants in Pulsatilla Adans. for the first time, and compound 7 is isolated from this plant for the first time.