UNAMBIGUOUS H-1-NMR AND C-13-NMR ASSIGNMENTS OF ISOFLAVONES FROM VIROLA-CADUCIFOLIA

被引：23

作者：

DOSSANTOS, SA

DE CARVALHO, MG

BRAZ FILHO, R

机构：

[1] UNIV FED RURAL RIO DE JANEIRO, DEPT QUIM, BR-23851970 SEROPEDICA, RJ, BRAZIL

[2] UNIV ESTADUAL NORTE FLUMINENSE, LT CCTA, SETOR QUIM PROD NAT, BR-28015620 S JOSE CAMPOS, RJ, BRAZIL

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 1995年 / 6卷 / 04期

关键词：

ISOFLAVONES; H-1- AND C-13-NMR SPECTRAL DATA;

D O I：

10.5935/0103-5053.19950059

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Unambiguous H-1- and C-13-NMR assignments of the isoflavonoids 5,7-dihydroxy-4'-methoxy isoflavone (biochanin A, 1), 2',5,7-trihydroxy-4'-methoxyisoflavone (2), 5,7-dihydroxy-2',4'-dimethoxyisoflavone (3) involved the homonuclear 2D (HH)-H-1-H-1-COSY and heteronuclear 2D direct CH ((HC)-H-1-C-13-COSY-(CH)-C-1J), via long-range CH coupling [(1)Hx(13)C-COSY-(CH)-C-nJ (n = 2 and 3), COLOC]. experiments, along with NOE difference spectra(H-1 {H}-NOE). These isoflavones were isolated from Virola caducifolia.

引用

页码：349 / 352

页数：4

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