3-(piperidine-4-yl)azetidine-1-carboxylic acid tert-butyl ester
tert-butyl 3-(4-(methoxycarbonyl)phenyl)azetidine-1-carboxylate
1-tert-butyl 3-(pyridine-2-yl)azetidine-1-carboxylate
tert-butyl 3-(4-amino-3-fluorophenyl)azetidine-1-carboxylate
tert-butyl 3-(3-fluoro-4-(methyl(1-methyl-1H-imidazo[4,5-c]pyridin-6-yl)amino)phenyl)azetidine-1-carboxylate