Bhutia Tshering Doma, Valant-Vetschera Karin M, Brecker Lothar
Chemodiversity Research Group, Dept. of Systematic and Evolutionary Botany, Institute of Botany, University of Vienna, Rennweg 14, A-1030 Vienna, Austria.
Nat Prod Commun. 2013 Aug;8(8):1081-4.
Two orphan flavonoids containing an oxepin structure in ring A and named as Primcortusin (1) and 3'-OH-Primcortusin (2) were isolated from leaf exudates of Primula cortusoides, while P. glutinosa exudates yielded two dihydrochalcone derivatives (3,4). These novel structures have not been detected in other species of Primula so far. Chemical structures were elucidated by 2D NMR and mas spectrometry. The nature of compounds 1 and 2 is discussed, and ideas about their possible origin and that of unsubstituted flavone and other irregular substituted Primula flavones are presented.
从岩生报春的叶渗出物中分离出两种在A环中含有氧杂环庚三烯结构的孤儿类黄酮，分别命名为报春柯亭素（1）和3'-羟基报春柯亭素（2），而粘毛报春的渗出物产生了两种二氢查耳酮衍生物（3,4）。到目前为止，在其他报春花物种中尚未检测到这些新结构。通过二维核磁共振和质谱对化学结构进行了阐明。讨论了化合物1和2的性质，并提出了关于它们可能的来源以及未取代黄酮和其他不规则取代报春花黄酮来源的观点。
