A difluoroprostacyclin of the following formula (V), its lower alkanol ester or its pharmaceutically acceptable salt:
wherein A is an ethylene group, a vinylene group or an ethynylene group, R is a substituted or unsubstituted C1-1o alkyl group, a substituted or unsubstituted C1-1o alkenyl group, a substituted or unsubstituted C1-10 alkynyl group, a substituted or unsubstituted C3-8 cycloalkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryloxy group, Q is a substituted or unsubstituted C1-10 alkyl group, a substituted or unsubstituted C1-10 alkenyl group, a substituted or unsubstituted C1-10 alkynyl group, a substituted or unsubstituted C3-8 cycloalkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group.
下式(V)的二
氟前列环素、其低级烷醇酯或其药学上可接受的盐:
其中 A 是
乙烯基、
乙烯基或
乙炔基;R 是取代或未取代的 C1-1o 烷基、取代或未取代的 C1-1o 烯基、取代或未取代的 C1-10 烷基、取代或未取代的 C3-8 环烷基、取代或未取代的芳烷基、或取代或未取代的芳氧基,Q 是取代或未取代的 C1-10 烷基、取代或未取代的 C1-10 烯基、取代或未取代的 C1-10 炔基、取代或未取代的 C3-8 环烷基、取代或未取代的芳基或取代或未取代的芳基。