tert-butyl (S)-4-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)methyl)-3-methylpiperazine-1-carboxylate

tert-butyl (S)-4-(benzo[b]thiophen-2-ylmethyl)-3-methylpiperazine-1-carboxylate

tert-butyl (S)-3-methyl-4-(4-(prop-2-yn-1-yloxy)benzyl)piperazine-1-carboxylate

tert-butyl (S)-3-methyl-4-((1-methyl-1H-indol-3-yl)methyl)piperazine-1-carboxylate

tert-butyl (S)-4-((5-chloro-1,3-dimethyl-1H-pyrazol-4-yl)methyl)-3-methylpiperazine-1-carboxylate

tert-butyl (S)-4-(2,6-difluoro-4-hydroxybenzyl)-3-methylpiperazine-1-carboxylate

tert-butyl (S)-3-methyl-4-(quinolin-2-ylmethyl)piperazine-1-carboxylate

tert-butyl (S)-4-(3-chloro-4-hydroxybenzyl)-3-methylpiperazine-1-carboxylate

tert-butyl (S)-4-(5-chloro-2-hydroxybenzyl)-3-methylpiperazine-1-carboxylate

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

tert-butyl (S)-4-(3-hydroxy-4-methoxybenzyl)-3-methylpiperazine-1-carboxylate

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

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

tert-butyl (S)-3-methyl-4-(2-nitrobenzyl)piperazine-1-carboxylate

tert-butyl (S)-3-methyl-4-(4-nitrobenzyl)piperazine-1-carboxylate

tert-butyl (S)-4-(4-ethoxybenzyl)-3-methylpiperazine-1-carboxylate