RESUMEN
OBJECTIVE: To study the chemical constituents in the leaves of Rehmannia glutinosa Libosch. METHODS: The compounds were isolated and purified by Diaion HP-20, Toyopearl HW40, Sephadex LH-20, MCI Gel CHP-20, and silica gel column chromatography, and the structures were elucidated on the basis of spectral data and physiochemical properties. RESULTS: Twenty-seven compounds were obtained from the 50% acetone extract, and their structures were identified as p-hydroxybenzoic acid(1), gentisic acid(2), 6, 7-dihydroxycoumarin(3), p-hydroxyphenylethyl alcohol(4), 3, 4-dihydroxyphe-nylethyl alcohol(5), protocatechuic acid(6), 1, 2, 4-trihydroxybenzene(7), diosmetin(8), luteolin-7-O-β-D-glucuronide(9), apigenin(10), 2β, 3β, 19α-trihydroxyolean-12-ene-13, 28-dioic acid(11), 2α, 3β-dihydroxyolean-12-ene-28-oic acid(12), glutinolic acid(13), β1-hydroxyacteoside(14), echinacoside(15), jionoside B,(16), acteoside(17), isoacteoside(18), ajugol(19), catalpol(20), 8-epiloganic acid(21), luteolin(22), oleanolic acid(23), ursolic acid(24), oleanonic acid(25), β-sitosterol(26) and daucosterol(27). CONCLUSION: Compounds 1-14 and 23-25 are isolated from this plant for the first time.
RESUMEN
Objective To study the chemical constituents ofPronephrium triphyllum.Methods The chemical constituents in the plant were isolated and purified with silica gel and Sephadex LH-20.Their structures were identified by analyses of spectral data and physicochemical properties.Results Six compounds were isolated and identified as shelincaoide A(1),n-butyl-13-D-fructopyranoside(2),triphyllin A(3),6,7-di-hydroxycoumarin(4),daucosterol(5),and 13-sitosterol(6),respectively.Conclusion Compound 1 is found to be a new compound.Compounds 2 and 4 are firstly isolated from the plants in Pronephrium Presl.and all compotmds except 3 are obtained from the species for the first time.