ABSTRACT
Objective: To study the chemical constituents from Disporum cantoniense. Methods: Separation was carried out by ion exchange chromatography, medium pressure MCI column chromatography, ODS column chromatography, gel column chromatography, preparative and semi preparative liquid chromatography; The structures of the compounds were identified by modern spectral techniques such as mass spectrometry and nuclear magnetic resonance. Results: Eleven compounds were isolated and identified as 2’-β-D-glucopyranosyloxybenzyl-6-α-L-(4’-O-acetyl)-rhamnopyranosyloxy-2-hydroxy-3-methoxybenzoate (1), 4’,7- dihydroxyflavone (2), palmatine (3), marmesinin (4), 4’-O-β-D-glucosyl-5-O-methylvisamminol (5), nodakenetin (6), 2-aminopyridine (7), tenuifoliside A (8), neosakuranin (9), 2″-O-rhamnosylicariside II (10) and baohuoside I (11). Conclusion: Compound 1 is a new compound named disporumoside, compounds 2-11 are isolated from the genus of Disporum for the first time.
ABSTRACT
Objective To investigate the chemical constituents from Disporum cantoniense. Methods Compounds were isolated and purified by macroporus resin, ods, Sephadex LH-20, MCI-gel CHP20 resin column chromatography and preparative HPLC. The structures were identified by spectral analysis. Results Twenty compounds were isolated and identified as 2-hydroxybenzyl alcohol (1), p-hydroxybenzaldehyde (2), 4-hydroxyacetophenone (3), 3,5-dimethoxy-4-hydroxy-benzaldehyde (4), 4-(4-hydroxyphenyl)-2- butanone (5), neoliquiritin (6), 2,3,5,4’-tetrahydroxy stilbene-2-Ο-β-D-glucoside (7), (E)-1-(4’-hydroxyphenyl)-but-1-en-3-one (8), isoquercitrin (9), 3-hydroxy-1-(4-hydroxy-3,5-dimethoxy-phenyl)-1-propanone (10), icariol A2 (11), ecdysterone (12), glansreginic acid (13), hesperidin (14), ononin (15), quercetin (16), isorhamnetin-3-O-β-D-glucoside (17), (E)-4-(4-hydroxy-3-methoxyphenyl) but-3-en-2-one (18), (-)-secoisolariciresinol (19), and luteolin (20). Conclusion Compounds 1, 3-8, 10-15, and 17-19 are isolated from the genus of Disporum for the first time.
ABSTRACT
Objective: To study the chemical constituents from Disporum cantoniense. Methods: Various column chromatographic techniques were used to separate and purify the chemical constituents and their structures were elucidated by spectral ananlysis. Results: Sixteen compounds were isolated and identified as 3-maleimide-5-oxime (1), 4-methylene-5-oxopyrrolidine-2- carboxylic acid (2), thymine (3), adenosine (4), 5'-deoxy-5'-methylamino-adenosine (5), ethyl-α-L-rhamnose (6), bergenin (7), 4-hydroxy- 2-methoxyphenyl-6-deoxy-α-L-talopyranoside (8), (-)-epicatechin (9), (6R,9R)-roseoside (10), 3-(4-hydroxy-3,5-dimethoxyphenyl) propane-1,2-diol (11), 3-hydroxy-5-(p-hydroxyphenyl) pentanoic acid (12), 1-ribityl-2,3-diketo-1,2,3,4-tetrahydro-6,7-dimethyl-quinoxaline (13), (6S,9R)-vomifoliol (14), 1-(3,4-dihydroxyphenyl)-2-hydroxye-thanone (15), and 1,2-dihydroxy-1-(4-hydroxy-3,5-dimethoxyphenyl)- ethane (16). Conclusion: Compounds 1, 2, 5-9, and 12-16 are isolated from genus Disporum Salisb. for the first time, and compounds 1, 2, 5-10, and 12-16 are isolated from this plant for the first time.