(S)-(-)-9,10-Difluoro-2,3-dihydro-3-Methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid

2,2-Difluoroethanamine

Methyl 4-(bromomethyl)-3,5-difluorobenzoate

Ethyl 2-((2,6-difluorobenzyl)(ethoxycarbonyl)amino)-4-methyl-5-(4-nitrophenyl)thiophene-3-carboxylate

Methyl 3-cyano-5-fluorobenzoate

5-Bromo-4-chloro-2-fluorobenzoic acid