A Cyclooligomerisation Approach to Backbone-Modified Cyclic Peptides Bearing Guanidinium Arms
                                
                                    
                                        作者:Katrina Jolliffe、Richard Black、Victoria Dungan、Rebecca Li、Philip Young                                    
                                    
                                        DOI:10.1055/s-0029-1219155
                                    
                                    
                                        日期:2010.3
                                    
                                    Cyclooligomerisation of the pentafluorophenyl ester derivatives of oxazoles, derived from dipeptides containing protected ornithine, diaminobutanoic acid and diaminopropionic acid residues, gives the cyclic trimers as the major products. Deprotection and treatment with guanidinylating agents provides efficient access to backbone rigidified cyclic peptides with guanidinium functionalised side chains.
                                    从含有保护的
鸟氨酸、二
氨基
丁酸和二
氨基丙酸残基的二肽衍生的
噁唑的
五氟苯酯衍
生物经环二聚化后,主要生成环三聚体。通过脱保护并使用
胍基化试剂处理,可高效获得具有
胍功能化侧链的骨架刚性化环肽。