Applications of Organosulfur Chemistry to Organic Synthesis:  Total Synthesis of (+)-Himbeline and (+)-Himbacine
                                
                                    
                                        作者:David J. Hart、Jing Li、Wen-Lian Wu、Alan P. Kozikowski                                    
                                    
                                        DOI:10.1021/jo970612a
                                    
                                    
                                        日期:1997.7.1
                                    
                                    Total syntheses of(+)-himbacine (1) and (+)-himbeline (2) are described. The synthesis involves the preparation of sulfone 38 and aldehyde 42 as single enantiomers followed by coupling of these compounds using a Julia-Lythgoe olefination. The preparation of sulfone 38 features an acid-promoted intramolecular Diels-Alder reaction of an alpha,beta-unsaturated thioester while the synthesis of 42 features a Beak, alkylation of piperidine 39.