上游原料
ethyl 4-bromobutanoate; Ethyl 4-bromobutyrate2-Oxoacetic acid; Glyoxylic Acid6-(2-phenylpyrazolo[1,5-a]pyridin-3-yl)-3(2H)-pyridazinonebromo(2-phenylethynyl)magnesium；phenylacetylenyl magnesium bromide;(phenylethynyl)magnesium bromide4-phenyl-3-butyn-2-one1-aminopyridinium iodide1-aminopyridinium iodide2-hydroxy-4-oxo-4-(2-phenylpyrazolo[1,5-a]pyridin-3-yl)butyric acidethyl 4-[6-oxo-3-(2-phenylpyrazolo[1,5-a]pyridin-3-yl)-1(6H)-pyridazinyl]butanoate
