| abstract |
A carboxylic acid derivative of formula (I): n n n n n n n n n n wherein R 1 is —COOH, —COOR 6 , etc.; A is a single bond, alkylene, etc.; R 2 is alkyl, alkoxy, etc.; B is a carbocyclic ring or a heterocyclic ring; Q is alkylnene-Cyc2, etc.; D is a linking chain; and R 3 is alkyl, a carbocyclic ring or a heterocyclic ring, or a non-toxic salt thereof. The compound of formula (I) binds to PGE 2 receptor, especially subtypes EP 3 and/or EP 4 and show the antagonizing activity, are useful for the prevention and/or treatment of diseases induced pain, itch, urticaria, allergy, urinary frequency, urinary disturbance, Alzheimer's disease, cancer, dysmenorrhea, endometriosis, etc. |