tert-butyl 4-[N'-(2-chlorophenyl) ureido]-3-methylphenylacetate

tert-butyl 4-[N'-(2bromophenyl) ureido]-3-methylphenylacetate

methyl 4-(((2S,4S)-4-fluoro-1-(2-(3-methyl-4-(3-(o-tolyl)ureido)phenyl)acetyl)pyrrolidin-2-yl)methoxy)benzoate

methyl 4-[(2S,4S)-1-[4-[N'-(2-chlorophenyl)ureido]-3-methylphenylacetyl]-4-fluoro-2-pyrrolidinyl]methoxybenzoate