The invention is concerned with the compounds of formula I:
and pharmaceutically acceptable salts and esters thereof, wherein R
1
-R
4
are defined in the detailed description and claims. In addition, the present invention relates to methods of manufacturing and using the compounds of formula I as well as pharmaceutical compositions containing such compounds. The compounds of formula I are antagonists at the CRTH2 receptor and may be useful in treating diseases and disorders associated with that receptor such as asthma.
这项发明涉及式I的化合物:
及其药用可接受的盐和
酯,其中R1-R4在详细说明和权利要求中有定义。此外,本发明涉及制造和使用式I的化合物的方法,以及含有这种化合物的药物组合物。式I的化合物是CRTH2受体的
拮抗剂,可能在治疗与该受体相关的疾病和紊乱方面有用,如哮喘。