A coupling activator for racemization-free coupling in peptide synthesis, An additive for peptide segment coupling in in reducing the extent of configurational loss at the reactive carboxylic acid residue. Carpino L A etc. works demonstrated that the DIC/HOAt system is more effective in preserving configuration for peptide segment coupling than the analogous DIC/HOBt systemin DMF and DCM. [1]Reference:Carpino L A, El-Faham A. The diisopropylcarbodiimide/1-hydroxy-7-azabenzotriazole system: segment coupling and stepwise peptide assembly[J]. Tetrahedron, 1999, 55(22): 6813-6830.
