12a-substituted pregna-1,4-diene-3,20-dione of the general formula
wherein R is a hydrogen atom, R1CO or R2SO2 where R1 is a hydrogen atom, an alkyl group which may optionally be substituted or an aryl group which may optionally be sub- stitued and R2 si an alkyl group.
These compounds are useful as intermediates for the synthesis of antiinflammatory corticoids such as prednisone, prednisolone, etc..
通式为 12a 取代的孕甾-1,4-二烯-3,20-二酮
其中 R 是氢原子、R1CO 或 R2SO2,R1 是氢原子、可选择被取代的烷基或可选择被取代的芳基,R2 si 是烷基。
这些化合物可用作合成
泼尼松、
泼尼松龙等抗炎皮质激素的中间体。