modifying theA ring has been developed. It is established that the yields of the main and the side products greatly depend on the transformation conditions, mycelium age, and the structure of the steroid substrate. Under the optimal transformation conditions novel 9α-hydroxysubstituted derivatives of androstenolone, pregnenolone, 16-dehydro-16α,17α-epoxy-, and-16α-methoxypregnenolone have been obtained
一种使用 Circinella sp. 真菌对 Δ5-3β-羟基类
固醇进行 9a-羟基化的制备方法。10Kh-1220不能修改A环已经研制成功。已确定主要和副产品的产量在很大程度上取决于转化条件、菌丝年龄和类
固醇底物的结构。在最佳转化条件下,
雄烯醇酮、
孕烯醇酮、16-脱氢-16α、17α-环氧-和-16α-甲氧基
孕烯醇酮的新型 9α-羟基取代衍
生物的产率为 36-80%。