A NUMBER of polyhydroxyanthraquinones, all of which are derivatives of 2methylanthraquinone, have been reported from these laboratories as metabolic products of different species of moulds. They are: helminthosporin, 4:5:8-trihydroxy-2-methylanthraquinone, from Helminthosporium gramineum Rabenhorst [

No abstract

DURING the routine examination of a number of cultures of fungi isolated by M L. D. Galloway [1936] from Indian soil, our colleague, Mr G. Smith noticed that the metabolism solution of one of them-an indubitable strain of Aspergillus fumigatus Fresenius-changed from yellowish brown t6 a strong purple colour on making alkaline. We have investigated the reason for this unusual colour change and have shown that it is due to the presence of a hitherto undescribed mould metabolic product which we have called fumigatin.