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• W1965596768 abstract "The potential for biotransformation of the substrate 17β-hydroxyandrost-4-en-3-one (testosterone) by six filamentous fungi, namely, Rhizopus oryzae ATCC 11145, Mucor plumbeus ATCC 4740, Cunninghamella echinulata var. elegans ATCC 8688a, Aspergillus niger ATCC 9142, Phanerochaete chrysosporium ATCC 24725 and Whetzelinia sclerotiorum ATCC 18687, was investigated. In this study both free cells and macerated mycelia immobilised in calcium alginate were utilised and the results (products, % yields, % transformation) were compared. In general the encapsulated cells of the microorganisms effectively generated products similar to those found using free cells. However, with immobilised macerated mycelia, isolation of the transformation products was expedited by the simple work up procedure, and their purification was facilitated by the absence of fungal secondary metabolites. Twenty seven analogues of testosterone were generated, wherein the androstane skeleton was functionalised at C-1β, -2β, -6β, -7α, -11α, -14, -15α, -15β and -16β by the moulds. Redox chemistry was also observed. Seven of the analogues, 6β,11α,17β-trihydroxyandrost-4-en-3-one, 6β,14α,17β-trihydroxyandrost-4-en-3-one, 2,6β-dihydroxyandrosta-1,4-diene-3,17-dione, 2β,16β-dihydroxyandrost-4-ene-3,17-dione, 2β,6β-dihydroxyandrost-4-ene-3,17-dione, 2β,15β,17β-trihydroxyandrost-4-en-3-one and 2β,3α,17β-trihydroxyandrost-4-ene, were novel compounds. Five others, namely, 7α,17β-dihydroxyandrost-4-en-3-one, 6β,14α-dihydroxyandrost-4-ene-3,17-dione, 15α,17β-dihydroxyandrost-4-en-3-one, 16β,17α-dihydroxyandrost-4-en-3-one and 2β,16β,17β-trihydroxyandrost-4-en-3-one, were fully characterised for the first time." @default.
• W1965596768 created "2016-06-24" @default.
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• W1965596768 date "2013-11-01" @default.
• W1965596768 modified "2023-09-26" @default.
• W1965596768 title "The facile bioconversion of testosterone by alginate-immobilised filamentous fungi" @default.
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• W1965596768 doi "https://doi.org/10.1016/j.molcatb.2013.05.025" @default.
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