Aureotine Aureothin

Pyran-pyranoid Compounds.—Aureotine Aureothin). Two research groups have independently examined separate features of the biosynthesis of Aureotine ( = Aureothin) (155), an antibiotic produced by Streptomyces thioluteus. 

Citreoviridin. Nagel et al. have shown that Penicillium pulvillorum produces citreoviridin (156), a yellow fluorescent, neurotoxic polyene, previously 

Cardilio, C. Fuganti, D. Ghiringhelli, D. Giangrasso, and P. Grasselli, Tetrahedron Letters, 1972, 4875. 

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