Dichromenoxanthones from Tovomita brasiliensis

被引：26
作者：
Marques, VLL
De Oliveira, FM
Conserva, LM [1 ]
Brito, RGL
Guilhon, GMSP
机构：
[1] Univ Fed Alagoas, Dept Quim, BR-57072970 Maceio, Brazil
[2] Fed Univ Para, Dept Quim, BR-66060060 Belem, Para, Brazil
来源：
PHYTOCHEMISTRY | 2000年 / 55卷 / 07期
关键词：
Tovomita brasiliensis; Guttiferae; dichromenoxanthones; terpenes;
D O I：
10.1016/S0031-9422(00)00296-X
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Two dichromenoxanthones [1,6-dihydroxy-6',6/-dimethylpyrano(2',3':3,4)-6",6"-dimethylpyrano(2",3":7,8)xanthone (brasilixanthone A) and 1,6-dihydroxy-6',6/-dimethylpyrano(2',3':)xanthone (brasilixanthone B)], along with betulinic acid, friedelin, sitosterol and stigmasterol were isolated from the roots and stems of Tovomita brasiliensis. Their structures were characterized on the basis of H-1 and C-13 NMR spectral data, including 2D NMR experiments. (C) 2000 Elsevier Science Ltd. All rights reserved.
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页码：815 / 818
页数：4
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