| abstract |
The present invention provides a piperazine compound represented by Formula (I) or a salt thereof, n n n n n n n n n n whereinn X represents CH or an N atom; R 1 represents C 1-6 alkyl; R 2 represents C 1-6 alkyl that may have one or more substituents, C 2-6 alkenyl that may have one or more substituents, —(C═O)—N(R 3 )(R 4 ), or —(C═O)—OR 5 , R 3 and R 4 are the same or different, and each represents hydrogen or C 1-6 alkyl that may have one or more substituents; or R 3 and R 4 , taken together with a nitrogen atom to which R 3 and R 4 are attached, may form a saturated heterocyclic group; and R 5 represents hydrogen or C 1-6 alkyl that may have one or more substituents or aralkyl. |