Patent ID: 8618094

Claim:
A compound of formula (I), or a salt thereof: wherein R 1 is a hydrogen atom; R 2 is a hydrogen atom; R 3 and R 4 are hydrogen atoms; R 5 is a hydrogen atom or a fluorine atom; R 6 and R 7 taken together with the carbon atoms to which they are bonded form a five- to six-membered cyclic structure, the cyclic structure representing a partial structure that together with the pyrrolidine ring forms a fused cyclic structure, wherein the five- to six-membered cyclic structure does not contain a double bond and optionally contains an oxygen atom as a ring constituent atom, R 5 is optionally a methylene group taken together with R 6 to form a three-membered fused cyclic structure; and Q is a partial structure represented by formula (II): wherein R 8 is a 1,2-cis-2-halogenocyclopropyl group, a cyclopropyl group, or a 6-amino-3,5-difluorophenyl group; R 9 is a hydrogen atom; R 10 is a hydrogen atom; R 11 is a hydrogen atom or an amino group; X 1 is a fluorine atom or a hydrogen atom; A 1 is a partial structure represented by formula (III): wherein X 2 is a methyl group or a methoxy group, or X 2 and R 8 taken together with the atoms of formula (II) through which they are connected form a cyclic structure such that Q represents a partial structure represented by the following formula: wherein Y 0 is a methyl group or a fluoromethyl group, and X 1 , R 9 , R 10 and R 11 are defined as above.