A new metabolite of Aspergillus versicolor, demethylsterigmatocystin (II) has been converted into 5-hydroxydihydrosterigmatocystin (IV) specifically labelled with 14C in the O-methyl group—this compound is shown to be a biogenetic precursor of aflatoxins B2 and G2, (IX) and (XI), respectively, in A. parasiticus: a second new metabolite of A. versicolor has been shown to be 6-deoxyversicolorin-A (XII).
G. C. Elsworthy, J. S. E. Holker, J. M. McKeown, J. B. Robinson and L. J. Mulheirn, J. Chem. Soc. D, 1970, 1069 DOI: 10.1039/C29700001069
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