| 摘要 |
Benzo or pyridopyridazinones and pyridazinthiones of formula (I) wherein: X and Y are nitrogen or carbon, provided that at least one is carbon, and Z is oxygen or sulfur; R<1> is hydrogen, lower alkyl, aryl, heteroaryl, or heterocycle lower alkylene; R<2>, R<3>, R<4>, R<5> and R<6> are independently selected from hydrogen, lower alkyl, halo, carboxy, alkoxycarbonyl, carbamoyl, acyl, acyl halide, thiomethyl, trifluoromethyl, cyano or nitro; or a pharmaceutically acceptable ester, ether or salt thereof, have been found to be useful as an anti-inflammatory, antiasthmatic, immunosuppressive, anti-allograft rejection, anti-graft-vs-host rejection, autoimmune disease or analgetic agent(s). |
