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Sebek, Oldrich K. (The Upjohn Company, Kalamazoo, Mich.),Lester M. Reineke, and Durey H. Peterson . Intermediates in the metabolism of steroids byPenicillium lilacinum . J. Bacteriol.83: 1327–1331. 1962—Nonproliferating cells ofPenicillium lilacinum (Thom) metabolized progesterone successively to 20-β-hydroxy-4-pregnen-3-one, testosterone, androstenedione, and testololactone. Testosterone and androstenedione were readily interconvertible. 11-α-Hydroxyprogesterone was transformed in an analogous way and its intermediate, 11-α, 20-β-dihydroxy-4-pregnen-3-one, was isolated and identified by a combination of microbiological and chemical methods.

INTERMEDIATES IN THE METABOLISM OF STEROIDS BY PENICILLIUM LILACINUM