作者:Naoki Toyooka、Ayako Fukutome、Hideo Nemoto、John W. Daly、Thomas F. Spande、H. Martin Garraffo、Tetsuo Kaneko                                    
                                    
                                        DOI:10.1021/ol025775m
                                    
                                    
                                        日期:2002.5.1
                                    
                                    [GRAPHICS]Synthesis of alkaloid 223A has been achieved by sequential use of our original conjugate addition reaction to enaminoesters as the key step. The proposed structure for natural 223A (A, absolute configuration unknown) was revised to B, and the relative stereostructure was determined to be 5R*,6R*,8R*,9S* by the present synthesis.