New metabolic products of Aspergillus flavus. Part II. Asperflavin, anhydroasperflavin, and 5,7-dihydroxy-4-methylphthalide
作者:John Frederick Grove
DOI:10.1039/p19720002406
日期:——
Asperflavin, a yellow pigment from the culture filtrate of an entomogenous strain of Aspergillus flavus, is shown to be (+)-3,4-dihydro-3,6,9-trihydroxy-8-methoxy-3-methylanthracen-1 (2H)-one (I; R = H). New minor metabolic products isolated were anhydroasperflavin (1,6-dihydroxy-8-methoxy-3-methyl-9-anthrone)(III; R1= R3= H, R2= Me) and a lactone, shown to be 5,7-dihydroxy-4-methylphthalide (VIII;
黄曲霉毒素是黄曲霉属昆虫致病菌株培养滤液中的黄色颜料,显示为(+)-3,4-二氢-3,6,9-三羟基-8-甲氧基-3-甲基蒽-1(2 H)一(I; R = H)。分离出的新的次要代谢产物是脱水灰黄素(1,6-二羟基-8-甲氧基-3-甲基-9-蒽酮)(III; R 1 = R 3 = H,R 2 = Me)和内酯,显示为5 ,7-二羟基-4-甲基邻苯二甲酰亚胺(VIII; R 1= R 2= H)。黄色的孢子头含有已知的真菌色素曲霉精(XII; R = nC 5 H 11 ·CH:CH·)和黄霉素(XII; R = nC 7 H 15)的混合物。