SUBSTITUTED THIAZOLEACETIC AS CRTH2 LIGANDS

摘要

Compounds of formula (I) are useful for the treatment of disease responsive to modulation of CRTH2 receptor activity, such as asthma, rhinitis, allergic airway syndrome, and allergic rhinobronchitis; wherein X1 is -S-, -O-, -N=N-. -NR7-, -CR7=CR8-, -CR7=N-, wherein R7 and R8 are independently hydrogen or C1-C3 alkyl; A is a carboxyl group -COOH, or a carboxyl bioisostere; rings Ar<2> and Ar<3> each independently represent a phenyl or 5- or 6­-membered monocyclic heteroaryl ring, or a bicyclic ring system consisting of a 5- or 6-membered carbocyclic or heterocyclic ring which is benz-fused or fused to a 5- or 6-membered monocyclic heteroaryl ring, said ring or ring system being optionally substituted; ring B is as defined for Ar<2> and Ar<3>, or an optionally substituted N-­pyrrolidinyl, N-piperidinyl or N-azepinyl ring; s is 0 or 1; L1, L2 and L4 are linker radicals as defined in the description; Q1 and Q2 represent substituents as defined in the description.