SIDE REACTIONS IN PEPTIDE-SYNTHESIS .10. PREVENTION OF O-ACYLATION DURING COUPLING WITH ACTIVE ESTERS

  • 1 January 1979
    • journal article
    • research article
    • Vol. 13  (1) , 22-27
Abstract
Acylation of the hydroxyl groups in the side chains of serine, threonine or tyrosine occurs in coupling with active esters. This side reaction, which is quite pronounced in histidine-containing peptides, can be prevented with additives. Of a series of compounds tested, 2,4-dinitrophenol and pentachlorophenol were the most effective.