Cyclic amino compounds represented by general formula (I) or pharmacologically acceptable salts thereof having an excellent antiplatelet aggregation effect; etc. and thus being useful as preventives or remedies for embolism, thrombosis or arterial sclerosis wherein R1 represents optionally substituted phenyl; R2 represents optionally substituted aliphatic acyl, optionally substituted benzoyl or alkoxycarbonyl; and R3 represents substituted and optionally ring-fused saturated cyclic amino.
A cyclic amine derivative represented by the following formula: ##STR1## wherein R.sup.1 represents a substituted or unsubstituted phenyl group, R.sup.2 represents a substituted of unsubstituted C.sub.1 -C.sub.8 aliphatic acyl group, a substituted or unsubstituted benzoyl group or a C.sub.1 -C.sub.4 alkoxycarbonyl group, and R.sup.3 represents a substituted 3 to 7 membered saturated cyclic amino group which may form a fused ring; or pharmaceutically acceptable salts thereof. The compounds and salts have excellent platelet aggregation inhibitory action. They are useful for the treatment and prevention of such diseases as embolism, thrombosis or arteriosclerosis and for the preparation of pharmaceutical compositions for such uses.