| abstract |
Compounds of general formula (I), wherein W represents pyrid-3-yl, benzimidazol-1-yl, imidazo(4,5-c)pyridin-1-yl, imidazo(4,5-c)pyridin-3-yl and imidazo(4,5-c)pyridin-5-yl optionally substituted by alkyl; Z represents: a) a divalent alkanediyl, alkenediyl or alkynediyl group, b) a -(CH2)qU(CH2)r- group, optionally substituted, q is an integer from 0-3, r is an integer from 0-3 and U is -O-, -S- or a furandiyl, tetrahydrofurandiyl, thiophenediyl, tetrahydrothiophenediyl, thiazolediyl, tetrahydrothiazolediyl, piperazinediyl, piperidinediyl, cyclopentanediyl, cyclohexanediyl, cycloheptenediyl or benzenediyl group; or c) a (α) group wherein m is an integer from 0-3, X is -O-, -S- or -CH2- and each of R?4 and R5¿ is independently hydrogen or alkyl; Q represents a carbonyl, thiocarbonyl or sulphonyl group or a bond; B represents: a) a -VR8 group wherein V is -C(=O)-, -C(=O)O-, -CH¿2?O-, -CH2OC(=O)-, -C(=S)-, -CH2OC(=O)NH-, -C(=S)O-, -CH2S-, -C(=O)NHSO2- or -SO2NHC(=O)-; b) a -CH2NR?9R10¿ group or a -CONR9R10 group; c) a group Y where Y is a 5- or 6-membered heterocyclic ring; d) a group -CH¿2?-Y or C(=O)NHY; are antagonists of platelet activating factor (PAF). |