17.beta.-acyl-17.alpha.-propynyl-11.beta.-(cyclic amino) aryl steroids and their derivatives having antagonist hormonal properties

Cook, C., Kepler, J., & O'Reilly, JM. (2004). IPC No. U.S. 17.beta.-acyl-17.alpha.-propynyl-11.beta.-(cyclic amino) aryl steroids and their derivatives having antagonist hormonal properties. (U.S. Patent No. 6740645).

Abstract

The invention is directed to a novel class of17.beta.-acyl-17.alpha.-propynyl steroids which exhibit potentantiprogestational activity.

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