This invention relates to compounds which are generally IP receptor antagonists
and which are represented by Formula I:
##STR1##
wherein G1 is selected from the group consisting of a, b1
and b2,
##STR2##
and A and G2 are as defined in the specification; or pharmaceutically
acceptable salts or solvates thereof. The invention further relates to pharmaceutical
compositions containing such compounds, methods for their use as therapeutic agents,
and methods of preparation thereof.