tert-butyl (2S)-2-(5-((1-oxo-6-(((trifluoromethyl)sulfonyl)oxy)-2,2a,7,7a-tetrahydro-1H-cyclobuta[a]inden-3-yl)ethynyl)-1H-imidazol-2-yl)pyrrolidine-1-carboxylate

tert-butyl (S)-2-(4,4-dimethyl-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydroquinazolin-2-yl)pyrrolidine-1-carboxylate

ethyl 2-(4-bromo-2-nitrophenyl)-2-methylpropanoate

tert-butyl (S)-2-((2-(4-bromo-2-nitrophenyl)propan-2-yl)carbamoyl)pyrrolidine-1-carboxylate

tert-butyl (S)-2-((2-(2-amino-4-bromophenyl)propan-2-yl)carbamoyl)pyrrolidine-1-carboxylate