DIMERIC XANTHONES FROM GARCINIA-LIVINGSTONEI

被引：28

作者：

SORDATDISERENS, I

HAMBURGER, M

ROGERS, C

HOSTETTMANN, K

机构：

[1] UNIV LAUSANNE, ECOLE PHARM, INST PHARMACOGNOISE & PHYTOCHIM, BEP, CH-1015 LAUSANNE, SWITZERLAND

[2] UNIV DURBAN, DEPT CHEM, DURBAN 4000, SOUTH AFRICA

来源：

PHYTOCHEMISTRY | 1992年 / 31卷 / 10期

关键词：

GARCINIA-LIVINGSTONEI; GUTTIFERAE; XANTHONES; GARCILIVIN AC; DIELS-ALDER ADDUCTS;

D O I：

10.1016/0031-9422(92)83732-E

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 [生物化学与分子生物学]; 081704 [应用化学];

摘要：

From the root bark of Garcinia livingstonei, three xanthone dimers have been isolated. Structure elucidation was achieved mainly by NMR and mass spectrometry, including extensive NOE difference measurements, and by comparison with monomeric prenylated xanthones previously isolated from the same plant. Garcilivin A-C are structurally related to 1,4,5-trihydroxy-3-(3-methylbut-2-enyl)-9H-xanthen-9-one and formally derive from the corresponding diene via dimerization by a Diels-Alder-type reaction.

引用

页码：3589 / 3593

页数：5

共 22 条

[1]

STRUCTURE DETERMINATION AND SPECTRAL ASSIGNMENT BY PULSED POLARIZATION TRANSFER VIA LONG-RANGE H-1-C-13 COUPLINGS [J].