Total Synthesis of Sequential Retro-Peptide Oligomers
作者:Simone Ceretti、Gianluigi Luppi、Silvia De Pol、Fernando Formaggio、Marco Crisma、Claudio Toniolo、Claudia Tomasini
DOI:10.1002/ejoc.200400242
日期:2004.10
The totalsynthesis of sequentialoligomers of retro-peptides of the general formula Boc(-gGly-mAib)n-OBn, starting from dimethylmalonic acid, has been carried out in good overall yield. The key step is the formation of the gGly unit >N−CH2−N<, which is easily obtained in a one-pot/three-step reaction from BnO-mAib-Gly-OH and diphenylphosphoryl azide. The synthesis of the sequentialoligomers of RCO(-gAla-mAib)n-OR′