| abstract |
A COMPOUND OF THE FORMULA : WHEREIN RING A AND RING B ARE: (1) RING A IS AN OPTIONALLY SUBSTITUTED UNSATURATED MONOCYCLIC HETEROCYCLIC RING, AND RING B IS AN OPTIONALLY SUBSTITUTED UNSATURATED MONOCYCLIC HETEROCYCLIC RING, AN OPTIONALLY SUBSTITUTED UNSATURATED FUSED HETEROBICYCLIC RING, OR AN OPTIONALLY SUBSTITUTED BENZENE RING, (2) RING A IS AN OPTIONALLY SUBSTITUTED BENZENE RING, AND RING B IS AN OPTIONALLY SUBSTITUTED UNSATURATED MONOCYCLIC HETEROCYCLIC RING OR AN OPTIONALLY SUBSTITUTED UNSATURATED FUSED HETEROBICYCLIC RING, OR (3) RING A IS AN OPTIONALLY SUBSTITUTED UNSATURATED FUSED HETEROBICYCLIC RING, AND RING B ARE INDEPENDENTLY AN OPTIONALLY SUBSTITUTED UNSATURATED MONOCYCLIC HETEROCYCLIC RING, AN OPTIONALLY SUBSTITUTED UNSATURETED FUSED HETEROBICYCLIC RING, OR AN OPTIONALLY SUBSTITUED BENZENE RING; X IS A CARBON ATOM OR A NITROGEN ATOM; Y IS - (CHâ‚‚) n - (n IS 1 OR 2); A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF, OR A PRODRUG THEREOF . |