Five metabolites of contraceptive drug etonogestrel (1) were synthesized through biotransformation by fungi.
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Biotransformation of 1Cunninghamella blakesleeana yielded metabolites 2–6.
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Biotransformation of 1Cunninghamella echinulata yielded metabolites 2, 4, and 6.
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6β-Hydroxy-etonogestrel (5) was found to be active against β-glucuronidase enzyme.
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