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Special Metabolites Isolated from Ouratea cuspidata Engl. (Ochnaceae)
被引:1
|作者:
Suzart, L. R.
[1
]
Fidelis, Q. C.
[1
]
de Carvalho, M.
[1
]
Kaplan, M. A. C.
[2
]
机构:
[1] Univ Fed Rural Rio de Janeiro, Dept Quim, ICE, PGQO, Campus Seropedica Br 465 Km 07, BR-23890000 Seropedica, RJ, Brazil
[2] Univ Fed Rio de Janeiro, Inst Pesquisa Prod Nat, CCS, Bloco H,Av Carlos Chagas Fo 373,Cidade Univ, BR-21941902 Rio De Janeiro, RJ, Brazil
关键词:
Steroids;
triterpenes;
biflavonoids;
maslinic acid;
flavonoid glycosides;
D O I:
10.5935/1984-6835.20160019
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Chromatographic fraction of extracts from the leaves and branches of Ouratea cuspidate (Ochnaceae) allowed the isolation and identificationof the mistures: of sitosterol and stigmasterol; two news maslinic acid ester derivative: 3-beta-Ostearoyl/palmitoyl-maslinic acid and 2-alpha-O-stearoyl/palmitoyl-maslinic acid, and lupeol, aand alpha-amyrin, besides the pure compounds: maslinic acid, amentoflavone and putraflavone, flavonoids 4', 5,7-trihydroxy-3', 5'-dimethoxy-flavone, 3,5,7,4'-tetrahydroxy-3'-methoxy-flavone, 5,7,4'-trihydroxy-3'-methoxy-3-O-beta-D-galactopyranosyl-flavone as well as the carbohydrate methyl-beta-D-glucopyranoside. The structures of compounds were deduced by spectral data analysis of NMR H-1, C-13 (HSQC, HMBC, COSY) besides ESI-MS/MS, GC/MS and comparison with literature data.
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页码:288 / 295
页数:8
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