Afzeliixanthones A and B, two new prenylated xanthones from Garcinia afzelii ENGL. (Guttiferae)

被引：12

作者：

Waffo, AFK

Mulholland, D

Wansi, JD

Mbaze, LM

Powo, R

Mpondo, TN

Fomum, ZT

König, W

Nkengfack, AE

机构：

[1] Univ Douala, Fac Sci, Dept Chem, Douala, Cameroon

[2] Univ Yaounde, Fac Sci, Dept Organ Chem, Yaounde, Cameroon

[3] Univ Hamburg, Inst Organ Chem, D-20146 Hamburg, Germany

[4] Univ KwaZulu Natal, Sch Chem, ZA-4041 Durban, South Africa

[5] Univ Surrey, Sch Biomed & Mol Sci, Guildford GU2 7XH, Surrey, England

来源：

CHEMICAL & PHARMACEUTICAL BULLETIN | 2006年 / 54卷 / 04期

关键词：

Garcinia afzelii; Guttiferae; xanthone;

D O I：

10.1248/cpb.54.448

中图分类号：

R914 [药物化学];

学科分类号：

100701 ;

摘要：

Two new prenylated xanthones, afzeliixanthones A (1) and B (2), together with three known xanthones (35) and two phytosterols, beta-sitosterol and stigmasterol, were isolated from the CH2Cl2/MeOH (1 : 1) extract of the stem bark of Garcinia afzelii ENGL. collected in the South West Province of Cameroon. Structures were mainly established using one and two-dimensional NMR and mass spectroscopies. The antioxidant activities of the crude extracts as well as the new compounds (1) and (2) were evaluated.

引用

页码：448 / 451

页数：4

共 17 条

[1] CHEWING STICK USAGE IN SOUTHERN GHANA [J].