Folic acid derivatives, such as radiolabeled pteroyltyrosine, are conveniently synthesized from either pteroic acid or by the direct condensation of 6-formylpterin with p-aminobenzoyltyrosine methyl ester. The radioiodinated derivatives are particularly useful in competitive protein binding and radioimmuno-assays of folate compounds.
叶酸衍
生物,例如放射性标记的酰基
酪氨酸,可方便地从叶酸酸或直接从6-甲酰-对
氨基苯甲酰
酪氨酸甲酯与
对氨基苯甲酸酪氨酸甲酯的缩合反应合成。放射性
碘化衍
生物在竞争性蛋白结合和叶酸化合物的放射免疫测定中特别有用。