阿兰酮B，一种从蒙氏阿兰藤（Allanblackia monticola Staner L.C.）茎皮中提取的多异戊烯基黄酮。

Allanxanthone B, a polyisoprenylated xanthone from the stem bark of Allanblackia monticola Staner L.C.

作者信息

Azebaze Anatole G B, Meyer Michèle, Bodo Bernard, Nkengfack Augustin E

机构信息

Department of Chemistry, Faculty of Science, University of Douala, P.O. Box 24157 Douala, Cameroon.

出版信息

Phytochemistry. 2004 Sep;65(18):2561-4. doi: 10.1016/j.phytochem.2004.07.027.

DOI:10.1016/j.phytochem.2004.07.027

PMID:15451317

Abstract

In addition to five known compounds including three xanthones, tovophyllin A, rubraxanthone and garciniafuran, one pentacyclic triterpene, lupeol and one phytosterol, stigmasterol, a polyisoprenylated xanthone named allanxanthone B was isolated from the stem bark of Allanblackia monticola. The structure of the new compound was assigned as 2-geranyl-1,3,6-trihydroxy-2',2'-dimethyl[5',6':7,8]xanthone by means of spectroscopic analysis. The antimicrobial activities of some of these compounds against a range of micro-organisms are also reported.

摘要

除了包括三种氧杂蒽酮、托沃菲林A、红果氧杂蒽酮和藤黄呋喃在内的五种已知化合物外，还从蒙氏阿兰藤黄的茎皮中分离出一种五环三萜——羽扇豆醇和一种植物甾醇——豆甾醇。通过光谱分析，将新化合物的结构确定为2-香叶基-1,3,6-三羟基-2',2'-二甲基[5',6':7,8]氧杂蒽酮。还报道了其中一些化合物对一系列微生物的抗菌活性。