L. Jiang et al., SYNTHESIS AND APPLICATION OF A NOVEL COUPLING REAGENT, ETHYL 1-HYDROXY-1H-1,2,3-TRIAZOLE-4-CARBOXYLATE, Tetrahedron, 54(47), 1998, pp. 14233-14254
An optimal coupling reagent, ethyl 1-hydroxy-1H-1,2,3-triazole-4-carbo
xylate (HOCt), has been designed and synthesised for application to so
lid phase peptide synthesis using Fmoc chemistry. It is used in combin
ation with carbodiimide reagents, has very high coupling efficiency, a
nd does not absorb at 302nm, thus allowing real-time monitoring of eac
h coupling cycle. Its applications in the synthesis of endothelin anal
ogues and difficult sequences are also discussed. (C) 1998 Elsevier Sc
ience Ltd. All rights reserved.