N-Cbz-O-benzyl-L-tyrosine methyl ester

methyl 2-[(dimethylamino)methylene]-4-methoxy-3-oxobutanoate

甲基2-{(E)-[(二甲基氨基)亚甲基]氨基}苯甲酸酯

tert-butyl (3Z)-3-[(dimethylamino)methylene]-4-oxopyrrolidine-1 -carboxylate

1,3-dihydro-1-methyl-5-phenyl-3(R,S)-((benzyloxycarbonyl)-amino)-2H-1,4-benzodiazepin-2-one