tert-butyl (S)-3-methyl-4-[(2-nitrophenyl)sulfonyl]-1,4-diazepane-1-carboxylate

(S)-1-benzyl 4-tert-butyl 2-methyl-1,4-diazepane-1,4-dicarboxylate

tert-butyl (S)-4-benzyl-3-methyl-1,4-diazepane-1-carboxylate

二碳酸二叔丁酯

(S)-tert-butyl 3-hydroxypropyl(2-(2-nitrophenylsulfonylamide)propyl)carbamate