4-(环丙烷羰基)哌嗪-1-羧酸叔丁酯

1-(tert-butoxycarbonyl)-4-[(5-chloro-1-phenylsulfonylindol-2-yl)sulfonyl]piperazine

tert-butyl 4-(4-phenylthiazol-2-yl)piperazine-1-carboxylate

4-Phenylcarbamoyl-piperazine-1-carboxylic acid tert-butyl ester

4-(2-chloro-6-nitro-phenyl)-piperazine-1-carboxylic acid tert-butyl ester