tert-butyl 8-(4-nitrobenzyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-(2-nitrobenzyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-(4-hydroxy-2-methoxybenzyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-(2-hydroxy-3-methoxybenzyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-(3-hydroxy-4-methoxybenzyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-(2-hydroxy-4-methoxybenzyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-(5-chloro-2-hydroxybenzyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-(3-chloro-4-hydroxybenzyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-(quinolin-2-ylmethyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-(2,6-difluoro-4-hydroxybenzyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-((5-chloro-1,3-dimethyl-1H-pyrazol-4-yl)methyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-((1-methyl-1H-indol-3-yl)methyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-(4-(prop-2-yn-1-yloxy)benzyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-(benzo[b]thiophen-2-ylmethyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)methyl)-2,8-diazaspiro[4.5]decane-2-carboxylate

tert-butyl 8-(3,4-dimethoxybenzyl)-2,8-diazaspiro[4.5]decane-2-carboxylate