2-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-3-yl]formamido}-5-methylhexanoic acid

Ethyl 4-(((4-chloro-2,5-dimethylphenyl)sulfonyl)oxy)-1-(4-fluorophenyl)-6-oxo-1,6-dihydropyridazine-3-carboxylate

Ethyl 4-(((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)sulfonyl)oxy)-6-oxo-1-(o-tolyl)-1,6-dihydropyridazine-3-carboxylate

Ethyl 4-(((4-ethylphenyl)sulfonyl)oxy)-6-oxo-1-(o-tolyl)-1,6-dihydropyridazine-3-carboxylate

Ethyl 4-(((4-ethoxyphenyl)sulfonyl)oxy)-6-oxo-1-(o-tolyl)-1,6-dihydropyridazine-3-carboxylate

Ethyl 4-(((4-butoxyphenyl)sulfonyl)oxy)-1-(4-fluorophenyl)-6-oxo-1,6-dihydropyridazine-3-carboxylate

Ethyl 1-(3-bromophenyl)-4-(((2-fluorophenyl)sulfonyl)oxy)-6-oxo-1,6-dihydropyridazine-3-carboxylate

Ethyl 4-(((3-fluorophenyl)sulfonyl)oxy)-6-oxo-1-(o-tolyl)-1,6-dihydropyridazine-3-carboxylate

Ethyl 4-((naphthalen-2-ylsulfonyl)oxy)-6-oxo-1-(p-tolyl)-1,6-dihydropyridazine-3-carboxylate

Ethyl 1-(4-fluorophenyl)-4-((naphthalen-2-ylsulfonyl)oxy)-6-oxo-1,6-dihydropyridazine-3-carboxylate

Ethyl 6-oxo-4-(((5,6,7,8-tetrahydronaphthalen-2-yl)sulfonyl)oxy)-1-(p-tolyl)-1,6-dihydropyridazine-3-carboxylate