hydrogen chloride-ethyl acetate 、
methyl 7-propoxy-5-nitro-1-benzofuran-2-carboxylate 、 (3R,5S)-N-propanesulfonyl-1-(3-acetoxy-2,2-dimethylpropyl)-7-chloro-5-(2,3-dimethoxyphenyl)-2-oxo-1,2,3,5-tetrahydro-4,1-benzoxazepine-3-acetamide 生成
methyl 5-amino-7-propoxy-1-benzofuran-2-carboxylate hydrochloride