An Expeditious Synthesis of Geodiamolide A, an 18-Membered Cytotoxic Depsipeptide from Marine Sponges
                                
                                    
                                        作者:Takayuki Shioiri、Takayuki Imaeda、Yasumasa Hamada                                    
                                    
                                        DOI:10.3987/com-97-s41
                                    
                                    
                                        日期:——
                                    
                                    Geodiamolide A (1) has been efficiently synthesized from the polypropionate and tripeptide units using the Evans asymmetric alkylation, the Mitsunobu esterification, and the macrolactamization with diphenyl phosphorazidate (DPPA) as key steps. Efficient esterification between the complex polyketide and tripeptide units was also realized under high pressure conditions.