| abstract |
New compounds of the formula <IMAGE> (I) wherein: R1 is cycloalkyl of five to seven carbon atoms optionally substituted with one or more lower alkyl groups; R2 is alkyl of two to twelve carbon atoms, cycloalkyl of five to seven carbon atoms, or cycloalkylalkyl of six to ten carbon atoms wherein the cycloalkyl group may be optionally substituted with one or more lower alkyl groups; R3 is hydrogen or lower alkyl; a is 0, 1, 2 or 3; and b is 1, 2 or 3; and the pharmaceutically acceptable acid addition salts thereof are useful as spermicidal and spermatostatic agents. |