(2,4-dioxo-1,4-dihydro-2H-quinazolin-3-yl)-acetic acid ethyl ester

methyl [(2-{[(benzyloxy)carbonyl]amino}benzoyl)amino]acetate

2-ethoxycarbonylmethylamino-4H-3,1-benzoxazin-4-one

2-(3-ethoxycarbonylmethylureido)benzoic acid

N-Boc-邻氨基苯甲酸