Methods of preparing 11 beta, 17 alpha, 20, 21-tetra-hydroxy steroids and corresponding 11 beta, 17 alpha, 21-trihydroxy-20-oxo steroids
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0154407A2
公开(公告)日:1985-09-11
@ A method for preparing 11β, 17a, 20, 21-tetrahydroxy steroids of the pregnane class comprises incubating the corresponding 17a, 20a or β, 21-trihydroxy steroid in the presence of a culture medium capable of effecting the 11β-hydroxylation which comprises a fungal culture of the genus Curvularia. A method for preparing 11β, 17a, 21-trihydroxy-20-oxo steroids of the pregnane class comprises the hydroxylation method described above followed by conversion of the resulting 11β, 17a, 20a or β, 21-tetrahydroxy steroid into the corresponding 11β, 17α, 21-trihydroxy-20-oxo steroid.
一种制备 11β、17a、20、21-四羟基孕烷类固醇的方法包括在能够进行 11β-羟基化反应的培养基中培养相应的 17a、20a 或 β、21-三羟基类固醇,该培养基包括 Curvularia 属真菌培养物。 一种制备 11β、17a、21-三羟基-20-氧代孕烷类固醇的方法包括上述羟基化方法,然后将得到的 11β、17a、20a 或 β、21-四羟基类固醇转化为相应的 11β、17α、21-三羟基-20-氧代类固醇。