名称:
                                Model studies directed towards microalga polyether toxins. A new approach to the construction of trans, syn, trans-oxotricyclic systems
                             
                            
                                摘要:
                                Investigations into the synthesis of trans,syn,trans-oxotricyclic systems present in marine polyether toxins are described.  Present studies have led to the development of a scheme for procuring an appropriately functionalized C12 oxane-oxane-oxepane subunit.  A new synthetic process for the construction of beta-dialkoxyoxanes starting from beta-diiodooxolanes has been investigated, demonstrating the ability of heterocyclic oxygens to act as conventional neighbouring group participators towards adjacent electrophilic sites.