一种来自蕨类植物硫黄粉背蕨且具有分类学意义的二氢黄酮醇。

A dihydroflavonol with taxonomic significance from the fern Notholaena sulphurea.

作者信息

Wollenweber E, Dörr M, Stevens J F

机构信息

Institut für Botanik der Technischen Universität, Darmstadt, Germany.

出版信息

Z Naturforsch C J Biosci. 2001 Jul-Aug;56(7-8):499-502. doi: 10.1515/znc-2001-7-804.

DOI:10.1515/znc-2001-7-804

PMID:11531080

Abstract

A new flavonoid, 2,3-trans-5,2'-dihydroxy-7,8-dimethoxy-dihydroflavonol-3-O-acetate, was isolated from the farinose coating on the lower leave surface of the fern, Notholaena sulphurea. The 2,3-cis diastereoisomer was isolated as a co-constituent. This novel acylated flavonoid is characteristic for the chemotype of N. sulphurea exhibiting yellow frond exudate. Its orrurrence underlines the affiliation of the species with the genus Notholaena.

摘要

从蕨类植物硫黄粉背蕨（Notholaena sulphurea）下部叶片表面的粉质覆盖物中分离出一种新的黄酮类化合物，2,3-反式-5,2'-二羟基-7,8-二甲氧基二氢黄酮醇-3-O-乙酸酯。2,3-顺式非对映异构体作为共成分被分离出来。这种新型的酰化黄酮类化合物是硫黄粉背蕨化学型的特征，该化学型表现出黄色的叶渗出物。它的存在突出了该物种与粉背蕨属的归属关系。