| abstract |
Benzoic acid derivatives represented by the following general formula (I) and nontoxic salts thereof wherein R1 represents COOH, COOR6, etc.; A and B each represents a carbon ring or a heterocycle; R2 represents alkyl, alkenyl, alkynyl, etc.; R4 represents alkyl, cycloalkyl, etc.; and R5 represents a carbon ring or a heterocycle. The compounds represented by the general formula (I) strongly bind to PGE¿2? receptors, in particular, subtypes EP3 and/or EP4 and exert an antagonism, which makes them useful in preventing and/or treating diseases such as pain, allergy, Alzheimer and cancer. |