1-{4-[(acetylamino)methyl]benzyl}-N-cyclopentyl-N-methyl-2-(2-naphthylsulfonyl)-1-hydrazinecarboxamide

N-(4-{[1-(4-morpholinylcarbonyl)-2-(2-naphthylsulfonyl)hydrazino]methyl}benzyl)acetamide

tert-butyl 2-{4-[(acetylamino)methyl]benzyl}-2-(1-piperidinylcarbonyl)-1-hydrazinecarboxylate

tert-butyl 2-{4-[(acetylamino)methyl]benzyl}-2-[(2-methyl-1-piperidinyl)carbonyl]-1-hydrazinecarboxylate