High throughput screening identified a phenoxyacetic acid scaffold as a novel CRTh2 receptor antagonist chemotype, which could be optimised to furnish a compound with functional potency for inhibition of human eosinophil shape change and oral bioavailability in the rat. (c) 2007 Elsevier Ltd. All rights reserved.
There are provided according to the invention compounds of formula (I) in free or salt form, wherein R<1>, R<2>, R<3>, X, Y, Z, m, and n are as described in the specification, process for preparing them, and their use as pharmaceuticals.