| abstract |
Sulfonylamino substituted bicyclyl hydroxamic acid derivatives of the formula: <CHEM> wherein R<1> and R<2> each is hydrogen or lower alkyl; R<3> is hydrogen, lower alkyl, lower alkoxy, hydroxy or halogen; X is alkylene or alkenylene; Y is methylene or oxygen; and n is 0, 1, or 2 or the pharmaceutically acceptable salt thereof. These compounds have an advanced antagonistic activity to thromboxane A2 (TXA2)-receptor and are useful for the treatment of thrombosis, vasoconstriction, or bronchoconstriction, and the like disease which are induced by TXA2. |