对来源于腔节藻属海藻Coelarthrumboergesenii(采自中国南海西沙群岛)的一株海洋内生真菌Aspergillusfumigatus的发酵液进行化学成分的分离及鉴定。采用硅胶柱色谱、凝胶柱色谱和高压液相色谱等分离手段,从乙酸乙酯萃取部分中分离得到16个次级代谢产物(1-16),经核磁共振、质谱等现代波谱技术鉴定了它们的结构,分别为gliotoxin ( 1 ). bis (dethio) bis (methylsulfanyl) gliotoxin ( 2 ), fumiquinazoline C ( 3 ). (-) -chaetomium ( 4 ).verruculogen(5) .fumitremorgin C(6) .brevianamide F(7) .fumigaclavine C(8) .decanedioic acid,2-methylene(9) .decanedioic acid, 2-methylene-, 1-methyl ester ( 10 ). 2-undecenedioic acid ( 11 ). 2-undecenedioic acid, 1-methyl ester ( 12 ). helvolic acid ( 13 ). di-2-ethyl hexyl phthalate ( 14 ). physcion ( 15 ). emodin (16),其中化合物9、10和12为新天然产物。
In order to find new, potentially biologically active compounds from marine microorganisms, we investigated the metabolites of an endophytic fungus named AspergiUus fumigatus, which was separated from Coelarthrum boergesenii (collected from Paraeel Islands in South China Sea). Accordingly, 16 compounds were isolated from the EtOAc-soluble portion of the fermentation broth of Aspergillusfumigatus. On the basis of extensive spectroscopic analyses ( 1D and 2D NMR, HR-ESI-MS) and by comparison with the spectroscopic data in the published literature,they were determined as gliotoxin ( 1 ), his ( dethio ) his (methylsulfanyl) gliotoxin ( 2 ), fumiquinazoline C ( 3 ), ( - ) -ehaetomium ( 4 ), verrueulo- gen (5) , fumitremorgin C ( 6 ), brevianamide F (7) , fumigaclavine C (8), decanedioic acid, 2 -methylene (9), 2 -meth- ylene-, 1 -methyl ester ( 10 ), 2 -undeeenedioic acid ( 11 ), 2-nndecenedioic acid, 1 -methyl ester ( 12 ), decanedioie acid, helvolic acid ( 13), and di-2-ethyl hexyl phthalate ( 14), physcion ( 15), emodin ( 16), resPectively. Among them, com- pounds 9,10 and 12 are new natural products.