Patent ID: 7196081

Claim:
A compound having the following formula (2): in which R 1 represents a hydrogen atom or a salt-forming metal, R 2 represents a linear or branched C 1 –C 7 halogenoalkyl group, m represents an integer of 2 to 14, n represents an integer of 2 to 7, and A represents a group selected from the following formulae (5) to (8), (10) to (16) and (21) to (24): in which in formulae (6), (7), and (14), each of R 3 and R 6 represents a linear or branched C 1 –C 5 alkyl group, in formulae (10), (11) and (12), Z 10 represents a hydrogen atom or an acyl group, in formulae (13), (21) and (22), each of Z 1 , Z 2 , Z 3 , Z 4 , Z 5 and Z 6 independently represents a hydrogen atom, a hydroxyl group or a linear or branched C 1 –C 5 alkyl group, in formula (15), R 7 represents a hydrogen atom or a linear or branched C 1 –C 5 alkyl group, in formula (16), each of Z 7 , Z 8 and Z 9 independently represents a hydrogen atom or a hydroxyl group, in formula (23), each of R 21 , R 22 , R 23 and R 24 independently represents a hydrogen atom, a linear or branched C 1 –C 5 alkyl group, a linear or branched C 1 –C 7 halogenoalkyl group, a halogen atom or an acyl group, or an enantiomer of the compound, or a pharmaceutically acceptable salt of the compound or enantiomer thereof.