Patent ID: 7994205

Claim:
A compound represented by the formula wherein ring C is a saturated or unsaturated 5-membered ring group having 1 to 4 hetero atoms selected from a nitrogen atom, an oxygen atom and a sulfur atom, R 1a is an optionally substituted aryl group, an optionally substituted 5- or 6-membered aromatic heterocyclic group or a fused ring group thereof, R 2a is an optionally substituted aryl group or an optionally substituted heteroaryl group, R 6a and R 7a are each absent, or a hydrogen atom, a C 1-4 alkyl group, a halogen atom or a cyano group, and R 3a is an aminomethyl group optionally substituted by 1 or 2 C 1-4 alkyl groups; wherein the ring-constituting atom of ring C to which substituent R 2a is bonded and the ring-constituting atom of ring C to which substituent R 3a is bonded are each a carbon atom or a nitrogen atom; excluding a compound represented by the formula wherein each symbol is as defined above, or a salt thereof.