Papain-catalysed synthesis of Z-l-aminoacyl-antipyrine amides from Z-protected amino acid esters and 4-aminoantipyrine
作者:Alexander Lang、Catharina Hatscher、Peter Kuhl
DOI:10.1016/j.tetlet.2007.03.067
日期:2007.5
The enzymatic synthesis of Z-l-aminoacyl-antipyrine amides from Z-protected aminoacidesters and 4-aminoantipyrine (AAP) was accomplished by papain in aqueous-organic and biphasic media as well as in suspension. Product yields of 80% and 68% for Z-Gly-AAP and Z-Ala-AAP, respectively, could be obtained. The products were purified and characterised by polarimetry and NMR. The following results expand