Compounds of formula
(wherein:
R1 is a hydrogen atom, a C1-8 alkyl group or a C3-7 cycloalkyl group; and
R2 is a hydrogen atom, a C1-6 alkyl group or a C3-6 cycloalkyl group; and the D-homo analogues thereof having the group -CO2R2 (wherein R2 is as defined above) at the 17aβ-position and salts and zwitterionic forms thereof have activity as antidysrhythmic agents and may be applicable for treatment of ventricular dysrhythmias in humans or animals. The compounds may be provided in the form of compositions in admixture with pharmaceutical carriers and excipients and may be prepared by a variety of processes known for producing steroids of this type.
式中化合物
其中
R1 是氢原子、C1-8 烷基或 C3-7 环烷基;以及
R2是氢原子、C1-6烷基或C3-6环烷基;及其在17aβ位上具有基团-CO2R2(其中R2如上定义)的D-高分子类似物及其盐和齐聚物形式具有抗心律失常活性,可用于治疗人类或动物的室性心律失常。这些化合物可以以与药物载体和赋形剂混合的组合物形式提供,并可通过生产此类类
固醇的各种已知工艺制备。