作者:G. C. H. EHRENSVÄRD
DOI:10.1038/159500a0
日期:1947.4
THE use of the carbobenzoxy reagent for protection of amino-groups in the course of peptide synthesis has, in spite of its obvious advantages, some limitations. In some cases, hydrogenolysis of the benzyl group is complicated by simultaneous hydrogenation of other groups present, and also carbobenzoxy compounds are sometimes difficult to crystallize; for example, N-carbobenzoxy-glycyl-cysteine ethyl
在肽合成过程中使用苯甲氧基试剂保护氨基基团,尽管其优点明显,但也存在一些局限性。在某些情况下,苄基的氢解由于存在的其他基团的同时加氢而变得复杂,并且苯甲氧基化合物有时难以结晶;例如,N-羧基苯甲氧基-甘氨酰-半胱氨酸乙酯。与苯甲氧基方法结合使用易于通过水解去除的另一种保护单元将大大扩展后者的使用。