Reinvestigation of the Phosphazo Method and Synthesis ofN-(t-Butoxycarbonyl)-L-argininep-Nitroanilide and a Chromogenic Enzyme Substrate for the Factor Xa
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 aminoacid 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 aminoacid derivatives of the urethane type including acid-labile (Z. Boc) and base-labile (Fmoc
FSO<sub>2</sub>N<sub>3</sub>-Enabled Synthesis of Tetrazoles from Amidines and Guanidines
作者:Tianyu Wang、Long Xu、Jiajia Dong
DOI:10.1021/acs.orglett.3c02470
日期:2023.8.25
and orthogonally. As the follow-up studies of the diazo transfer reaction using FSO2N3, we discover that amidines and guanidines are rapidly transformed into tetrazole derivatives when reacting with FSO2N3 under an aqueous environment, which is unprecedented for tetrazole synthesis.
在此,我们报道了在温和条件下通过 FSO 2 N 3实现四唑的简便合成。FSO 2 N 3已被证明是最强大的重氮化试剂,可将数千种伯胺快速且正交地转化为叠氮化物。作为FSO 2 N 3重氮转移反应的后续研究,我们发现脒和胍在水相环境下与FSO 2 N 3反应时迅速转化为四唑衍生物,这对于四唑合成来说是前所未有的。
Process for producing arginyl-p-nitroanilide
申请人:NITTO BOSEKI CO., LTD.
公开号:EP0137742A1
公开(公告)日:1985-04-17
An Nα-protected-NG-protected-arginyl-p-nitroanilide with high purity can be produced in high yield by reacting an Nα-protected-NG-protected-arginine with p-nitroaniline in pyridine in the presence of a condensing agent.
Reinvestigation of the Phosphazo Method and Synthesis of<i>N</i>-(<i>t</i>-Butoxycarbonyl)-L-arginine<i>p</i>-Nitroanilide and a Chromogenic Enzyme Substrate for the Factor Xa
Reaction conditions for the phosphazo method were reinvestigated in order to apply this method to the synthesis of p-nitroanilide(pNA)s of t-butoxycarbonyl(Boc)-and benzyloxycarbonyl(Z)-amino acids.