Df. Tai et al., IMMOBILIZED FICIN CATALYZED SYNTHESIS OF PEPTIDES IN ORGANIC-SOLVENT, Bioorganic & medicinal chemistry letters, 5(14), 1995, pp. 1475-1478
Immobilized ficin catalyzed the synthesis of peptides between N-protec
ted amino acids and amino acid esters in ethylacetate. Under similar c
onditions N,N'-diBoc-L-cystine was furnished the monopeptidation by co
ntrolling the duration of the reaction. The influence of pH, reaction
time and amount of triethylamine on mono-peptidation was also studied.