The invention is directed to 20-keto-11.beta.-arylsteroids of formula I: ##STR1## wherein R.sup.1, R.sup.6, R.sup.7, R.sup.9, R.sup.12 and X are as defined by the specification. The compounds exhibit progestational and antiprogestational activities.
这项发明涉及公式I的20-酮-11-β-芳基类
固醇:其中R.sup.1、R.sup.6、R.sup.7、R.sup.9、R.sup.12和X如规范所定义。这些化合物具有
孕酮和抗
孕酮活性。