19-Oxygenated steroid compounds of the pregnane series of the formula I ##STR1## in which R.sup.1 represents a hydrogen atom, and R.sup.2 represents an .alpha.-oriented lower alkanoylthio group, or R.sup.1 and R.sup.2 together represent a carbon-carbon bond or an .alpha.-or .beta.-oriented methylene radical, R.sup.3 represents a free hydroxymethyl group or a hydroxymethyl group etherified by a lower alkyl or esterified by a lower alkanoyl; or represents a formyl group, a carboxyl group or a lower alkoxycarbonyl group, and R.sup.4 represents a hydrogen atom or the acyl radical Ac of a carboxylic acid, and corresponding 1,2-dehydro derivatives have valuable aldosterone-antagonizing properties with a minimum effect on sexual functions. As the compounds reduce the excessive sodium retention and potassium excretion induced by aldosterone, they are especially useful as the active ingredient in pharmaceutical preparations for alleviating diseases involving hyperaldosteronismus in man and other warm-blooded animals.
公式I的孕烷系列氧化19-类
固醇化合物,其中R.sup.1代表氢原子,而R.sup.2代表α-定向的低烷酰
硫基团,或者R.sup.1和R.sup.2一起代表碳-碳键或α-或β-定向的亚甲基基团,R.sup.3代表自由羟甲基基团或由低烷基醚化的羟甲基基团或由低烷酰基酯化的羟甲基基团,或代表甲酰基,羧基或低烷氧羰基基团,而R.sup.4代表氢原子或
羧酸的酰基Ac,相应的1,2-脱氢衍
生物具有有价值的
醛固酮拮抗性能,对性功能影响最小。由于这些化合物减少了
醛固酮引起的过度
钠潴留和
钾排泄,它们特别适用于作为药物制剂中的活性成分,用于缓解涉及人类和其他温血动物的高
醛固酮症的疾病。