上游原料
Guanidinemethyl 3-amino-4-hydroxybenzoate2-bromo-2-methylpropanoyl bromidemethyl 2,2-dimethyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylate2-iodopropanemethyl 4-isopropyl-2,2-dimethyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylateGuanidinemethyl 3-amino-4-hydroxybenzoate2-bromo-2-methylpropanoyl bromidemethyl 4-isopropyl-2,2-dimethyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylatemethyl 4-hydroxy-3-(isopropylamino)benzoatemethyl 4-[(2-bromo-2-methylpropanoyl)oxy]-3-(isopropylamino)benzoatemethyl 3-[(2-bromo-2-methylpropanoyl)(isopropyl)amino]-4-hydroxybenzoate
