| 摘要 |
<p>A compound exhibiting CRTH 2 receptor antagonism, represented by the following formula (I), which compound is useful in the treatment of allergosis with which the association of eosinocytes is presumed, etc.: (I) wherein the group represented by the formula: (a) is a group of the formula: (b) or the like; R1 represents carboxyl, etc.; R3 represents a group of the formula -(CH2)n-N(-Y)SO2-Ar, etc.; and the other substituents are as defined in claim 1.</p> |
