| abstract |
The present invention relates to a compound represented by the formula wherein A is a pyridyl group having at least one substituent wherein R1, R2 and R3 are each a hydrogen atom, a halogen atom, a C1-6 alkyl group optionally substituted with halogen or a C1-6 alkoxy group optionally substituted by a halogen, R4 and R6 are each a hydrogen atom, a halogen atom, a C1-6 alkyl group optionally substituted by a halogen, R5 is a hydrogen atom, a halogen atom, a C1- 6 alkyl group optional As a halogen substituted or a C 1-6 alkoxy optionally substituted with a halogen, and R 7 is a hydrogen atom or a C 1-6 alkyl group optionally substituted with a halogen or a salt thereof, or a pharmaceutical composition containing it. |