4-[(甲基磺酰基)氧基]哌啶-1-羧酸苄酯

benzyl (2S)-2-(2-bromoacetyl)pyrrolidine-1-carboxylate

benzyl N-(5-iodopentyl)carbamate

1,3-双(苄氧羰基)-2-(三氟甲磺酰基)胍

1-{[(苄氧基)羰基]氨基}环庚烷羧酸