上游原料
3,4-diethoxy-3-cyclobutene-1,2-dione1,4-cyclohexadieneethyl 3-aminopropylcarbamateDiethyl (formylmethyl)phosphonatediethyl 2-({3-[(ethoxycarbonyl)amino]propyl}amino)ethylphosphonatediethyl 2-[{3-[(ethoxycarbonyl)amino]propyl}(2-ethoxy-3,4-dioxo-1-cyclobuten-1-yl)amino]ethylphosphonatediethyl 2-[8,9-dioxo-2,6-diazabicyclo[5.2.0]non-1(7)-en-2-yl]ethylphosphonate3-aminopropylamine; 1,3-propanediamine3,4-diethoxy-3-cyclobutene-1,2-dione1,1-dimethylethyl 3-aminopropylcarbamatediethyl 2-[8,9-dioxo-2,6-diazabicyclo[5.2.0]non-1(7)-en-2-yl]ethylphosphonatediethyl vinylphosphonatediethyl 2-({3-[(tert-butoxycarbonyl)amino]propyl}amino)ethylphosphonatediethyl 2-[{3-[(tert-butoxycarbonyl)amino]propyl}(2-ethoxy-3,4-dioxo-1-cyclobuten-1-yl)amino]ethylphosphonate
