PENTAOXYGENATED XANTHONES FROM BREDEMEYERA-FLORIBUNDA

被引：28

作者：

SILVEIRA, ER ^{[1
]}

FALCAO, MJC ^{[1
]}

MENEZES, A ^{[1
]}

KINGSTON, DGI ^{[1
]}

GLASS, TE ^{[1
]}

机构：

[1] VIRGINIA POLYTECH INST & STATE UNIV, DEPT CHEM, BLACKSBURG, VA 24061 USA

来源：

PHYTOCHEMISTRY | 1995年 / 39卷 / 06期

关键词：

BREDEMEYERA FLORIBUNDA; POLYGALACEAE; ROOTS; RAIZ-DE-COBRA; PENTAOXYGENATED XANTHONES;

D O I：

10.1016/0031-9422(95)00103-E

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：

A chloroform extract of the roots of Bredemeyera floribunda yielded two new pentaoxygenated xanthones, 1,7-dihydroxy-3,4,8-trimethoxyxanthone and 1,3,7-trihydroxy-4,8-dimethoxyxanthone, and the ethanol extract of the resulting marc yielded 1,3,6-trihydroxy-2,7-dimethoxyxanthone. Structure determination of these pentaoxygenated xanthones was accomplished by spectral analysis, mainly NMR, including normal and inverse detection techniques such as HETCOR and HMBC. Chemical derivatization and comparison to literature data were also used.

引用

页码：1433 / 1436

页数：4

共 9 条

[1]

ANDRADE CHS, 1977, J NAT PRODUCTS, V40, P344

[2] ISOFLAVONES AND XANTHONES FROM POLYGALA-VIRGATA [J].

BASHIR, A ;

HAMBURGER, M ;

MSONTHI, JD ;

HOSTETTMANN, K .

PHYTOCHEMISTRY, 1992, 31 (01) :309-311

[3] CHEMICAL CONSTITUENTS OF GENTIANACEAE .15. TETRA AND PENTAOXYGENATED XANTHONES OF SWERTIA-LAWII [J].

GHOSAL, S ;

SHARMA, PV ;

CHAUDHURI, RK .

PHYTOCHEMISTRY, 1975, 14 (5-6) :1393-1396

[4]

HONGFA S, 1981, ZHIWU XUEBAO, V23, P464

[5]

IKETANI Y, 1992, CHEM ABSTR, V117, P178

[6] 2 XANTHONES FROM POLYGALA-TENUIFOLIA [J].

IKEYA, Y ;

SUGAMA, K ;

OKADA, M ;

MITSUHASHI, H .

PHYTOCHEMISTRY, 1991, 30 (06) :2061-2065

[7] STUDIES ON THE CONSTITUENTS OF FORMOSAN GENTIANACEOUS PLANTS .9. XANTHONES FROM FORMOSAN GENTIANACEOUS PLANTS [J].

LIN, CN ;

CHUNG, MI ;

GAN, KH ;

CHIANG, JR .

PHYTOCHEMISTRY, 1987, 26 (08) :2381-2384

[8]

RAO VSN, 1990, FITOTERAPIA, V51, P9

[9] XANTHONES FROM CHIRONIA-KREBSII [J].

WOLFENDER, JL ;

HAMBURGER, M ;

MSONTHI, JD ;

HOSTETTMANN, K .

PHYTOCHEMISTRY, 1991, 30 (11) :3625-3629

← 1 →