Condensed tetrahydroquinoline derivative and use thereof for medical purposes

A condensed tetrahydroquinoline compound represented by the following formula (I)

• wherein R1 is optionally substituted C6-C10 aryl, optionally substituted 5- or 6-membered heterocyclic aryl or optionally substituted bicyclic heteroaryl, R2 and R3 are the same or different and each independently is a hydrogen atom, C1-C6 alkyl, C1-C6 alkyl optionally substituted by 1 to 3 halogens, C2-C6 alkenyl or C2-C6 alkynyl, ring Q is the following formula (II-a), (II-b) or (II-c),
• wherein m, n and o are each independently 0, 1 or 2, R, R1a and R1b may be the same or different and each independently is a hydrogen atom, a halogen atom, optionally substituted C1-C6 alkyl, optionally substituted C1-C10 aryl or optionally substituted aryl-C1-C6 alkyl (provided that when o is 2, R may be ═O), W1a, W2a and W3a are the same or different and each independently is —CR1a═, a nitrogen atom, a sulfur atom or an oxygen atom, W2b are the same or different and each independently is —CHR1b—, —C(R1b—)2═, —CO—, a nitrogen atom or an oxygen atom, W3b is —CHR1b—, —CO—, a nitrogen atom, a sulfur atom or an oxygen atom (provided that at least one of W1a, W2a and W3a, or W1b, W2b and W3b, is CHR1b—, and at least one of them is a group other than a carbon atom, and when W1a, W2a and W3a, or W1b, W2b and W3b are plural nitrogen atoms, sulfur atoms or oxygen atoms, then the atoms are not sequentially bonded), and X is ═CH2 or an oxygen atom,
• or a pharmaceutically acceptable salt thereof, or a hydrate thereof.