Five- and Six-Membered Ring Opening of Pyroglutamic Diketopiperazine
作者:Dennis A. Parrish、Lon J. Mathias
DOI:10.1021/jo0160928
日期:2002.3.1
A variety of ring-opening reactions of pyroglutamic diketopiperazine at both the five-membered and six-memberedrings is described. Mild, basic conditions facilitate nucleophilic attack by amines at the diketopiperazine carbonyls giving pyroglutamides in excellent yield. Reaction with nucleophiles under acidic conditions give bis-glutamate derivatives of 2,5-diketopiperazine (DKP). These reactions