摘要:
Acidolytic cleavage of peptides from polymeric supports often employs dithiols as scavengers. A significant impurity was found during the synthesis of peptides containing p-benzoylphenylalanine (Bpa) when 1,2-ethanedithiol was the scavenger. Herein we describe a new side reaction involving Bpa containing peptides and dithiols that results in dithioketal formation and report a strategy to eliminate this side reaction. (C) 1997 Elsevier Science Ltd.