tert-butyl 4-(4-(pyrrolidin-1-yl)benzyl)piperazine-1-carboxylate

tert-butyl 4-(4-(diethylamino)benzyl)piperazine-1-carboxylate

tert-butyl 4-((5-nitrofuran-2-yl)methyl)piperazine-1-carboxylate

tert-butyl 4-((1H-pyrrolo[2,3-b]pyridin-3-yl)methyl)piperazine-1-carboxylate

tert-butyl 4-((5-chlorothiophen-2-yl)methyl)piperazine-1-carboxylate

tert-butyl 4-((2,3-dihydrobenzofuran-5-yl)methyl)piperazine-1-carboxylate

(4-((4-(tert-butoxycarbonyl)piperazin-1-yl)methyl)phenyl)boronic acid

4-((4-(tert-butoxycarbonyl)piperazin-1-yl)methyl)benzoic acid

tert-butyl 4-(4-hydroxy-3,5-dimethylbenzyl)piperazine-1-carboxylate

tert-butyl 4-(4-ethoxybenzyl)piperazine-1-carboxylate

tert-butyl 4-(4-nitrobenzyl)piperazine-1-carboxylate

tert-butyl 4-(2-nitrobenzyl)piperazine-1-carboxylate

tert-butyl 4-(4-hydroxy-2-methoxybenzyl)piperazine-1-carboxylate

tert-butyl 4-(2-hydroxy-3-methoxybenzyl)piperazine-1-carboxylate

tert-butyl 4-(2-(1,3-dioxoisoindolin-2-yl)ethyl)piperazine-1-carboxylate

tert-butyl 4-(5-methyl-2-phenylhex-2-en-1-yl)piperazine-1-carboxylate