ABSTRACT
Objective: To study the chemical constituents from n-butanol parts of Tinosporae Caulis. Methods: The compounds were isolated and purified by silica gel column chromatography, Sephadex LH-20 and semi-HPLC. The structures were identified by spectroscopic methods and physicochemical properties. Results: Sixteen compounds were isolated and identified from the n-butanol parts of Tinosporae Caulis as syringin (1), corchoionoside C (2), 3,4-dimethoxyphenyl-β-D-glucopyranoside (3), cinnamol-O-β-D-glucopyranoside (4), 3,4,5-trimethoxylphenol-β-D-glucopyranoside (5), benzyl-β-D-glucopyranoside (6), syringic acid (7), 3,5-dimethoxybenzoic acid-4-O-β-D-glucoside (8), 1,4-dihydroxymethyl-2,5-dimethoxy benzene (9), 1-[2- (furan-2-yl)-2-oxoethyl] pyrrolidin-2-one (10), cordysinin B (11), lyciumide A (12), tyrosine (13), cyclo-(Leu-Ile) (14), (-)-episyringaresinol (15), and (+)-syringaresinol-4’-O-β-D-glucopyranoside (16). Conclusion: Compounds 2 and 9-14 are isolated from Tinospora genus for the first time.
ABSTRACT
Objective: To study the chemical constituents in extract of Sanguisorba officinalis. Methods: Compounds were isolated from 10% ethanol extracts by Macroporous resin (D101, HP-20), dialysis bag, reversed phase silica gel (RP-8, RP-18), Toyopearl HW-40 column chromatography and their structures were elucidated by NMR and MS data. Results: Twenty-five compounds were isolated and their structures were elucidated as 4-(4’-hydroxyphenyl)-2-butanone-4’-O-β-D-glucopyranoside (1), phenethanol-β- vicianoside (2), junipetrioloside A (3), citroside A (4), corchoionoside C (5), adenosine (6), tryptophan (7), tachinoside (8), d-mandelic acid-β-D-glucopyranoside (9), (+) (7S,8S)-guaiacylglycerol 8-O-β-D-glucopyranoside (10), biophenol (11), 3,5-dihydroxyphenethyl alcohol 3-O-β-glucopyranoside (12), syringin (13), (2E,5E)-3,7-dimethyl-2,5-octadiene-1,7-diol (14), (±)-3-hydroxy-3,7-dimethyloct- 6-enoic acid (15), (2Z)-2,6-dimethyl-2,7-octadiene-1,6-diol (16), phlorizin (17), (+)-cyclo-olivil 6-O-β-D-glucopyranoside (18), 5’-methoxy-8’-hydroxyl-(+)-isolariciresinol-4’-O-β-D-gluco-pyranoside (19), phenethyl 6-O-α-L-arabinofuranosyl-β-D-glucoside (20), gaultherin (21), benzyl-O-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranoside (22), (2E)-7-hydroxy-3,7-dimethyl-2-octenyl 6-O-α-L-arabinofuranosyl-β-D-glucopyranoside (23), 3,3’,4’-tri-O-methylellagic acid (24), and methyl-4-(β-D-glucopyranosyloxy)- 3-hydroxy-5-methoxybenzoate (25). Conclusion: Compounds 1-22 were isolated from this plant for the first time.
ABSTRACT
Objective: To study the chemical constituents from the flowers of Gardenia jasminoides. Methods: The compounds were isolated by extensive chromatographic methods, including macroporous adsorption resin, silica gel column chromatography, and HPLC method. Their structures were elucidated on the basis of physiochemical properities and spectroscopic data. Results: Ten compounds were obtained and identified as kaempferol 3-O-β-D-glucopyranoside (1), kaempferol 3-O-β-D-galactopyranoside (2), kaempferol 3-O- robinobioside (3), kaempferol 3-O-rutinoside (4), corchoionoside C (5), (E)-p-hydroxycinnamic acid methyl ester (6), vanillin (7), caffeic acid (8), protocatechuic acid (9), and β-sitosterol (10). Among them, compounds 1-4 belong to flavonoid glucosides. Conclusion: Compounds 2, 3, and 5-7 are first isolated from the plants of Gardenia Ellis and compounds 1, 4, 8 and 9 are first isolated from the flowers of G. jasminoides.