Synthesis of β-Amino Acids: 2-(1H-Benzotriazol-1-yl)-1,1,3,3-tetramethyluronium Tetrafluoroborate (TBTU) for Activation of Fmoc-/Boc-/Z-α-Amino Acids
作者:Basanagoud S. Patil、Ganga-Ramu Vasanthakumar、V. V. Suresh Babu
DOI:10.1081/scc-120023410
日期:2003.9
A new and efficient method for the homologation of urethane protected alpha-amino acids to its beta-homomers by the Arndt-Eistert method using TBTU as a coupling agent is described. Several Fmoc-/Boc-/Z-protected alpha-amino diazoketone derivatives have been obtained as crystalline solids in good yield. The method is found to be rapid and stereospecific.