| abstract |
The present invention provides a fused-ring heterocyclic derivative represented by the following general formula (I) or a pharmaceutically acceptable salt thereof, which has a T-type calcium channel regulating effect and is useful as a therapeutic agent and/or preventive agent for itching. [wherein, R 1 represents a lower alkyl group that may have a substituent, etc., R 2 represents a cycloalkyl group that may have a substituent, etc., Q represents a hydrogen atom, etc., R 3 represents -C(=O)NR 8 R 9 ( In the formula, R 8 and R 9 are the same or different, representing a hydrogen atom, etc.), L 1 represents -CR 11A R 11B - (wherein, R 11A and R 11B are the same or different, representing a hydrogen atom, etc.), etc., W 1 and W 2 are the same or different, and represent CR 12 (wherein, R 12 represents a hydrogen atom, etc.), etc.]. |