methyl N-(3-(but-3-enoylamino)-4-(2-((1S)-1-((tert-butoxycarbonyl)amino)but-3-en-1-yl)pyridin-4-yl)phenyl)carbamate

tert-butyl methyl N,N'-((7S)-2-oxo-2,3,4,5,6,7-hexahydro-1H-8,12-(metheno)-1,9-benzodiazacyclotetradecine-7,15-diyl)biscarbamate

(S)-N-((1S)-1-(4-(2,4-diaminophenyl)pyridin-2-yl)but-3-en-1-yl)-2-methylpropane-2-sulfinamide

methyl (3-amino-4-(2-((S)-1-((S)-1,1-dimethylethylsulfinamido)but-3-en-1-yl)pyridin-4-yl)phenyl)carbamate

(S)-tert-butyl N-(1-(4-(2-amino-4-nitrophenyl)pyridin-2-yl)but-3-en-1-yl)carbamate