1-(4-chloro-3-nitrobenzoyl)piperazine

1-(3-methylpiperazin-1-yl)pentan-1-one

2-methyl-1-(3-methylpiperazin-1-yl)propan-1-one

3-methyl-1-(4-methylbenzoyl)piperazine

1-{[1,1'-biphenyl]-4-carbonyl}-3-methylpiperazine

3-methyl-1-(naphthalene-1-carbonyl)piperazine

1-(2-methylpiperazin-1-yl)propan-1-one

1-(4-methoxybenzoyl)-2-methylpiperazine

3,3-dimethyl-1-(2-methylpiperazin-1-yl)butan-1-one

1-(2-fluorobenzoyl)-2-methylpiperazine

1-(2-methylpiperazin-1-yl)heptan-1-one