RESUMEN
Objective: To investigate the chemical constituents from the ethyl acetate extracts in the roots of Rumex nepalensis. Methods: The compounds were isolated by using various chromatographic techniques, such as silica gel column, Sephadex LH-20 column, and semi-preparative HPLC. The structures of these compounds were determined by spectral data analyses. Results: Sixteen compounds were obtained and identified as ferulic acid (1), 7-hydroxy-5-methoxyphthalide (2), methyl 2-acetyl-3,5-dihydroxyphenylacetate (3), methylorsellinate (4), methyl p-hydroxycinnamate (5), 1-(2-Hydroxy-5-Methyl-phenyl)-ethanon (6), methyl syringate (7), 1-(2,4-dihydroxy-6-methylphenyl)-ethanon (8), 4-hydroxy-benzeneethanol (9), isovanillin (10), fallacinol (11), 7-hydroxy-2-methyl-5-methylchromone (12), 3-acetyl-2-methyl-1,5-dihydroxy-2,3-epoxynaphthoquinol (13), emodin (14), chrysophanol (15), and physcion (16). Conclusion: Compounds 12 and 13 are isolated from this plant for the first time, and compounds 1-11 are firstly isolated from the plants of Rumex L..
RESUMEN
Objective: To study the chemical constituents from the roots of Schefflera octophylla. Methods: The constituents were isolated and purified by repeated column chromatography on silica, Sephadex LH-20 gel, and HPLC. Their structures were elucidated by spectral analysis. Results: Eleven compounds were isolated and identified as 2α,3β,23α-trihydroxy-urs-12-ene-28-oic acid-28-O-β-D-glucopyranoside (1), 3α-hydroxy-urs-12-ene-23,28-dioic acid 28-O-α-L-rhamnopyranosy1 (1→4)-β-D-glucopyranosyl (1→6)-β-D-glucopyranoside (2), asiaticoside (3), decanol (4), octadecanol (5), lignoceric acid (6), octacosanoic acid (7), hexadecanoic acid (8), isovanillin (9), vanillin (10), and 2-hydroxy-4-(octyloxy) benzophenone (11). Conclusion: Compound 1 is isolated from the plants of Schefflera J. R. G. Forst. for the first time and compounds 4-11 are obtained from this plant for the first time.
RESUMEN
Objective: To study the chemical constituents from the barks of Lannea coromandelica. Methods: The chemical constituents were isolated and purified by column chromatography on silica gel column. NMR spectra were used for structural identification. Results: Thirteen compounds were isolated and identified as quercetin (1), (2. S,3. S,4. R,10. E)-2-[(2'. R)-2'-hydroxytetracosanoyl amino]-10-octadecene-1,3,4-triol (2), aralia cerebroside (3), 5,5'-dibuthoxy-2,2'-bifuran (4), β-sitosteryl-3β-glucopyranoside-6'-. O-palmitate (5), β-sitosterol palmitate (6), myricadiol (7), protocatechuic acid (8), p-hydroxybenzoic acidethyl ester (9), isovanillin (10), trans-cinnamic acid (11), palmitic acid (12), and stearic acid (13). Conclusion: Compounds 2-13 are isolated from this plant for the first time. © 2014 Tianjin Press of Chinese Herbal Medicines.
RESUMEN
Objective: To study the chemical constituents from the twigs and leaves of Glycosmis montana. Methods: The chemical constituents were isolated and purified by column chromatography on silica gel, MCI, and Sephadex LH-20 column, etc. The structures of compounds were elucidated by spectral analyses. Results: Twelve compounds were isolated and identified as hortiamide (1), dihydroalatamide (2), dictamnine (3), fagarine (4), glycofoline (5), isovanillin (6), N-p-coumaroyltyramine (7), epifriedelanol (8), friedelin (9), isoarborinol (10), vitexin (11), and kaempferol-3, 7-dirhamnoside (12). Conclusion: All the above compounds are obtained from G. montana for the first time, and compounds 1, 2, and 10-12 are obtained from the plants in genus Glycosmis Correa for the first time.