| Structure Identification: |
| Zhong Yao Cai. 2014 Oct;37(10):1786-8. | | Study on chemical constituents of Eucommia ulmoides leaves.[Pubmed: 25895383] |
To investigate the chemical constituents of Eucommia ulmoides leaves.
METHODS AND RESULTS:
Various column chromatography were used in the isolation and purification, physiochemical constant determination and spectral analysis were adopted to determine the chemical structures.
Ten compounds were isolated and identified as Borreriagenin (1), n-butyl-O-β-D-fructopyranoside (2), α-D-glucopyranosyl-(1-->1')-3'-amino-3'-deoxy-β-D-glucopyranoside (3), β-D-fructofuranosyl-α-D-galactopyranoside (4), β-D-fructose (5), diisobutyl phthalate (6), 5-hydroxy-9-isopropylether-guaiacylglycerol (7), 4-hydroxyphenylethanol-8-O-β-D-apiofuranosyl(1-->6)-β-D-glucopyranoside (8), lariciresinol (9), and (3S,5R,6R,9S)-tetrahydroxy-7-ene-megastigmane (10).
CONCLUSIONS:
All compounds are isolated from this genus for the first time. | | Zhongguo Zhong Yao Za Zhi. 2013 Dec;38(24):4329-34. | | Chemical constituents of Osmanthus fragrans fruits.[Pubmed: 24791540] |
METHODS AND RESULTS:
By Silica gel, Sephadex LH-20 and other materials for isolation and purification and by physicochemical methods and spectral analysis for structural identification, 23 compounds were isolated and identified from ethyl acetate portion of alcohol extract solution of Osmanthus fragrans fruits. Their structures were identified as nicotinamide (1), D-allitol (2), 5-hydroxymethyl-2-furancarboxaldehyde (3), acetyloleanolic acid (4), benzoic acid (5), ergosta-7,22-dien-3-one (6), beta-sitosterol (7), Borreriagenin (8), cerevistero (9), c-veratroylglycol (10), methyl-2-O-beta-glucopyranosylbenzoate (11), 3', 7-dihydroxy-4'-methoxyisoflavon (12), umbelliferone (13), caffeic acid methyl ester (14), oleanolic acid (15), (-) -chicanine (16), dillapiol (17), 3beta,5alpha, 9alpha-trihydroxyergosta-7-22-dien-6-one (18), 2alpha-hydroxy-oleanolic acid (19), betulinic acid (20), betulin (21), 3, 3'-bisdemethylpinoresinol (22), and lupeol (23). All compounds were isolated from the osmanthus fruit for the first time.
CONCLUSIONS:
Except for compounds 4, 7, 15, 19, 23, the rest ones were isolated from the this plant for the first time. |
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