A compound of formula (I):
or, where appropriate, a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable solvate thereof
wherein
A represents >C=X, wherein
X represents oxygen or sulphur, or A represents a bond;
Y represents N or N⁺-O⁻ or a moiety CR₈,
and the other substituents are defined as in claim 1;
a process for the preparation of such a compound, a pharmaceutical composition comprising such a compound and the use of such a compound and composition in medicine.
一种具有
化学式(I)的化合物:或适当时,其药学上可接受的盐,或其药学上可接受的溶剂化合物其中A代表>C=X,其中X代表氧或
硫,或A代表键;Y代表N或N⁺-O⁻或一个基团CR₈,其它取代基的定义如权利要求1中;一种制备这种化合物的方法,包括这种化合物的药物组合物以及在医学中使用这种化合物和组合物。