17.beta.-acyl-17.alpha.-propynyl-11.beta.-(cyclic amino) aryl steroids and their derivatives having antagonist hormonal properties
Citation
Cook, C., Kepler, J., & O'Reilly, J. M. (2004). IPC No. U.S.17.beta.-acyl-17.alpha.-propynyl-11.beta.-(cyclic amino) aryl steroids and their derivatives having antagonist hormonal properties (Patent No. 6740645.)
Abstract
The invention is directed to a novel class of 17.beta.-acyl-17.alpha.-propynyl steroids which exhibit potent antiprogestational activity.