Amino Acids and Peptides. XLVI. Introduction of Carboxyl Function into Pyrazinone by Using Newly Developed Procedure for Pyrazinone Ring Formation: Observation of Immediate Decarboxylation.
Amino Acids and Peptides. XLVI. Introduction of Carboxyl Function into Pyrazinone by Using Newly Developed Procedure for Pyrazinone Ring Formation: Observation of Immediate Decarboxylation.
Amino Acids and Peptides. XLVI. Introduction of Carboxyl Function into Pyrazinone by Using Newly Developed Procedure for Pyrazinone Ring Formation: Observation of Immediate Decarboxylation.
作者:Hiroaki TAGUCHI、Toshio YOKOI、Yoshio OKADA
DOI:10.1248/cpb.44.2037
日期:——
The carboxyl function was easily introduced into a pyrazinone ring by means of a newly developed procedure for pyrazinone ring formation from Asp- or Glu-containing dipeptidyl chloromethyl ketones : during the reaction, rapid decarboxylation from a carboxymethyl group at position 3 of 2(1H)-pyrazinone occurred due to the low electron density at position 3 of 2 (1H)-pyrazinone.