来自胶藤（Cassipourea gummiflua）的甲基化A型原花青素及相关代谢产物。

Methylated A-type proanthocyanidins and related metabolites from Cassipourea gummiflua.

作者信息

Drewes S E, Taylor C W

机构信息

Department of Chemistry, University of Natal, Pietermaritzburg, South Africa.

出版信息

Phytochemistry. 1994 Sep;37(2):551-5. doi: 10.1016/0031-9422(94)85098-4.

DOI:10.1016/0031-9422(94)85098-4

PMID:7765632

Abstract

The range of natural dimeric A-type proanthocyanidins is extended by identification of two new dimeric afzelechins in the form of 7-OMe-epiafzelechin-(4 beta-->8,2 beta-->0-->7)- epiafzelechin and 7-OMe-epiafzelechin-(4 beta-->8, 2 beta-->0-->7)-ent-afzelechin. These are accompanied in the stem bark of Cassipourea gummiflua by the related metabolites afzelechin, kaempferol-3-0-alpha-L-rhamnopyranoside, afzelechin-3-0- alpha-L-rhamnopyranoside, epiafzelechin (4 beta-->8,2 beta-->0-->7)-epiafzelechin and epiafzelechin-(4 beta-->8, 2 beta-->0-->7)-ent-afzelechin, the latter three compounds being reported from a natural source for the second time.

摘要

通过鉴定两种新的二聚阿夫齐莱宁形式，即7-甲氧基表阿夫齐莱宁-（4β→8,2β→0→7）-表阿夫齐莱宁和7-甲氧基表阿夫齐莱宁-（4β→8,2β→0→7）-对映阿夫齐莱宁，天然二聚体A型原花青素的范围得到了扩展。在胶木卡西普里亚（Cassipourea gummiflua）的茎皮中，这些化合物与相关代谢物阿夫齐莱宁、山奈酚-3-O-α-L-鼠李糖苷、阿夫齐莱宁-3-O-α-L-鼠李糖苷、表阿夫齐莱宁（4β→8,2β→0→7）-表阿夫齐莱宁和表阿夫齐莱宁-（4β→8,2β→0→7）-对映阿夫齐莱宁共存，后三种化合物是第二次从天然来源报道。