https://www.selleckchem.com/pr....oducts/sar439859.htm
All the compounds were characterized by 1H, 11B1H, and 13C1H NMR spectroscopy, and their structures were unequivocally established by crystallographic analysis.Second-order rate constants of the reduction of histidine radicals by tryptophan were obtained for all combinations of the two amino acids and their N-acetyl derivatives. For the dipeptide N-acetyl histidine-tryptophan, contributions from inter- and intramolecular reduction were revealed. The pH dependences of the rate constants were found to be determined by the protonation st