RESUMEN
Objective: To study the chemical constituents from the inflorescence bracts of Arctii Fructus. Methods: The compounds were isolated and purified by the methods of silica gel column chromatography, HPLC, and recrystallization, and the structures were elucidated by the means of spectral analysis. Results: Twelve compounds were isolated and identified as daucosterol (1), isofouquierol (2), (22E)-5α, 8-epidioxyergosta-6, 22-dien-3β-ol (3), 3β-hydroxy-21, 22-epoxyursa-20(30)-en (4), 3β, 21β-dihydroxy-20(30)-en-taraxastane (5), oleanolic acid (6), arctigenin (7), carthamogenin (8), caffeic acid (9), 4(14)-eudesmene-8α, 11-diol (10), monogynol A (11), and lupeol (12). Conclusion; Compounds 2-3, 5, 6, 10-11 are obtained from the plants of Arctium L. for the first time, and compound 12 is isolated from the inflorescence bracts of Arctii Fructus for the first time.
RESUMEN
The chemical constituents from Euphorbia lunulata was investigated in this paper. Fourteen compounds were isolated and purified by column chromatographies on silica gel and preparative HPLC. Their structures were identified by physiochemical properties and NMR data analysis as lupeol (1), euphol (2), cassipourol(3) , 24-methylenecycloartan-3beta-ol (4), 24-hydroperoxycycloart-25-en-3beta-ol (5), 25-hydroperoxycycloart-23-en-3beta-ol (6), betulin (7), uvaol (8), (23E) -25-methoxycycloart-23-en-3beta-ol (9), (23E) -cycloart-23,25-dien-3beta-ol (10), 24-methylenecycloartan-3beta, 28-diol (11), salicinolide (12), 2alpha, 3beta, 5alpha, 9alpha, 15beta-pentaacetoxy-11,12-epoxy-7beta, 8alpha-diisobutyryloxyjatropha-6 (17) -en-14-one (13) and 3beta, 5alpha, 15beta-triacetoxy-7beta-isobutyryloxy-9alpha-nicotinoyloxyjatropha-6 (17), 11(E)-dien-14-one (14). Among them, compounds 1-11 were isolated from E. lunulata for the first time.