1,1-二甲基乙基 3-亚乙基氮杂丁烷-1-羧酸

2-Methyl-2-propanyl 3-[3-(trifluoromethyl)phenoxy]-1-azetidinecar boxylate

tert-butyl 3-pyrazin-2-yloxyazetidine-1-carboxylate

1-Boc-3-(甲苯-4-磺酰氧基)-氮杂丁烷

tert-butyl 3-(2-(trifluoromethyl)phenoxy)-azetidine-1-carboxylate