5,6-Dimethoxysterigmatocystin and related metabolites from Aspergillus multicolor.
摘要:
From the mycelial mats of Aspergillus multicolor Sappa, five metabolites were isolated. Two of them were new metabolites; one was 5, 6-dimethoxysterigmatocystin (1) and the other 5, 6-dimethoxydihydrosterigmatocystin (4). The structure of 1 was determined by chemical degradation, NMR techniques of benzene-induced solvent shifts and X-ray structure analysis of its acetate (2). The three metabolites were identified as sterigmatocystin, averufin and versicolorin C, respectively.
From the mycelial mats of Aspergillus multicolor Sappa, five metabolites were isolated. Two of them were new metabolites; one was 5, 6-dimethoxysterigmatocystin (1) and the other 5, 6-dimethoxydihydrosterigmatocystin (4). The structure of 1 was determined by chemical degradation, NMR techniques of benzene-induced solvent shifts and X-ray structure analysis of its acetate (2). The three metabolites were identified as sterigmatocystin, averufin and versicolorin C, respectively.