| abstract |
The present invention provides a piperidine derivative having antagonistic action for tachykinin receptors and the like, a crystal thereof, and an agent for the prophylaxis or treatment of diseases including lower urinary tract disease and the like, which contains the derivative. Specifically, the present invention provides an optically active compound represented by the formula (I): n nwherein each symbol is as defined in the specification, and a salt thereof. |