abstract |
The present invention provides a compound having the following general formula (I) which is useful as a neurokinin receptor antagonist: n n(wherein,n R 1 , R 2 : optionally substituted (hetero)aryl, R 3 : —CO—R 4 , —CO—O—R 4 , etc., R 4 : alkyl, cycloalkyl, etc., A: CH 2 , CO, SO 2 , B: a single bond, etc., D: oxygen, CH 2 , E: alkylene, alkenylene, n: 1 to 3). |