Syntheses of some N‐(pyrazinecarbonyl) amino acids and peptides

Abstract
Derivatives of some amino acids, having a pyrazinecarbonyl or 3‐aminopyrazinecarbonyl radical, have been synthesized and some peptides prepared. In the case of the 3‐aminopyrazinecarbonyl derivatives, condensed pyrimidines, i.e. 4(3H)‐pteridinone derivatives, could be prepared.