摘要:
Commercially available Fmoc-protected L-amino acids were employed and coupled to L-allylglycine. Cross metathesis with 2-methyl-2-butene using second generation Grubbs' catalyst gave L-prenylglycine-containing dipeptides. Treatment with trifluoromethanesulfonic acid resulted in cyclisation and subsequent formation of acid-stable 5,5-dimethyl-L-proline dipeptides for direct insertion into linear peptide sequences. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.