New alkaloidal metabolites from cultures of entomopathogenic fungus Cordyceps takaomontana NBRC 101754
作者:Maichi Hama、Abdelsamed I. Elshamy、Tatsuro Yoneyama、Yusuke Kasai、Hirohumi Yamamoto、Kana Tanigawa、Ayari Oshiro、Masaaki Noji、Sayaka Ban、Hiroshi Imagawa、Akemi Umeyama
DOI:10.1016/j.fitote.2019.104364
日期:2019.11
Two new alkaloidal metabolites, cordytakaoamides A (1) and B (2), as well as, 2-[(2-hydroxyethyl) amino] benzoic acid (3) and 2E-decenamide (4), and three known compounds (5-7) were isolated from ethyl acetate and n-butanol soluble portions of the entomopathogenic fungus, Cordyceps takaomontana NBRC 101754. Compounds 3 and 4 were isolated here for first time from natural resources. The chemical structures
两种新的生物碱代谢产物,虫草高酰胺A(1)和B(2),以及2-[((2-羟乙基)氨基]苯甲酸(3)和2E-癸烯酰胺(4),以及三种已知化合物(5- 7)从昆虫病原性真菌冬虫夏草NBRC 101754的乙酸乙酯和可溶于正丁醇的部分中分离。此处首次从天然资源中分离出化合物3和4。根据诸如1D,2D NMR和HRMS的光谱技术建立化学结构。1和2的绝对构型通过1的总合成以及实验的圆二色性得以阐明。通过信号晶体X射线分析确认了化合物3。