Aspergillus chevalieri

Nanda, G, Nandi, P. Mishra, A.K. (1975) Studies in induced reversions at the arginine locus of Aspergillus chevalieri (Mangin). ZbI. Bakt. Hyg., I. Abt. Orig. B, 130, 105-108... 

Mould Metabolites.—The presence of pre-echinulin [L-alanyl-2 (l, 1-dimethyl-allyl)-L-tryptophan anhydride] in Aspergillus chevalieri has been confirmed,26 and two new metabolites, L-alanyl-L-tryptophan anhydride27" and D-valyl-L-tryptophan anhydride (30),276 have been isolated it is interesting to note that (30), unlike the other metabolites of this micro-organism, contains an amino-acid of the D series. 

Mould Metabolites.—Intermediates on the presumed biosynthetic pathway from tryptophan to echinulin and its analogues continue to be isolated. The introduction of a reversed isoprene unit at C-2 leads to L-analyl-2-(l,l-dimethylallyl)-L-tryptophan anhydride (31), a compound which has already been synthesized, and which has now been shown to be a constituent of Aspergillus chevalieri (Mangin) Thom et Church IFO 4090. The dehydro-derivative, neoechinulin A (32), recently isolated from A. amstelodami, has now been shown to occur in A. ruber A... 

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