Wollenweber E, Dörr M, Stevens J F
Institut für Botanik der Technischen Universität, Darmstadt, Germany.
Z Naturforsch C J Biosci. 2001 Jul-Aug;56(7-8):499-502. doi: 10.1515/znc-2001-7-804.
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.
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。
