中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
雄诺龙 | Stanolone | 521-18-6 | C19H30O2 | 290.446 |
本胆烷-17β-醇-3-酮 | 5β-androstan-17β-ol-3-one | 571-22-2 | C19H30O2 | 290.446 |
—— | 17β-hydroxy-4β,5-epoxy-5β-androstan-3-one | 2189-83-5 | C19H28O3 | 304.43 |
The fungus Gnomoniafructicola ATCC 11430 hydroxylates testosterone at C-2β in 40–60% yield. The enzyme involved has been shown to be an inducible CO sensitive, cyanide insensitive oxygenase, with a requirement for theΔ4-3-ketosteroid substrate functionality. The use of 2α- and 2β-deuterium labelled substrates has shown that hydrogen loss from C-2 during 2β hydroxylation is isotope dependent and non-stereospecific. This is interpreted in terms of a Δ2,4-dienolic enzyme-bound intermediate form of the substrate. Keywords: Gnomoniafructicola, hydroxylation, steroids, testosterone.