A convenient synthesis of amino acid p-nitroanilides; synthons in the synthesis of protease substrates
作者:Dirk T.S. Rijkers、Hans P.H.M. Adams、H. Coenraad Hemker、Godefridus I. Tesser
DOI:10.1016/0040-4020(95)00671-t
日期:1995.10
A method is described for the synthesis of Nα-protected bi- and trifunctional amino acid p-nitroanilides. The reaction uses phosphorus oxychloride as the condensing agent. The synthesis is simple, rapid, free of racemization and affords yields between 70–90%. The synthesis can be performed not only with amino acid derivatives of the urethane type including acid-labile (Z. Boc) and base-labile (Fmoc
一种方法是为N的合成所述α -保护的二-和三官能氨基酸p -nitroanilides。该反应使用三氯氧化磷作为缩合剂。合成简单,快速,没有消旋作用,收率在70-90%之间。可以进行合成不仅与聚氨酯类的氨基酸衍生物,包括酸不稳定(Z. Boc)和碱不稳定的羰基(Fmoc,MSC)N α -proteclivc功能或烯丙基衍生的保护,而且还用N α -三烯丙基氨基酸,尽管收率较低。该反应在吡啶中进行,其机理暗示了通过与二氯二磷酸(HOPOCl 2)形成混合酸酐来进行羧基活化。