Total Synthesis of (+)-Benzastatin E via Diastereoselective Grignard Addition to 2-Acylindoline
                                
                                    
                                        作者:Narihiro Toda、Mayuko Ori、Kazuko Takami、Keiko Tago、Hiroshi Kogen                                    
                                    
                                        DOI:10.1021/ol027215t
                                    
                                    
                                        日期:2003.2.1
                                    
                                    [GRAPHICS]A stereoselective total synthesis of (+)-benzastatin E (1) is described. The synthesis involves a diastereoselective Grignard addition to 2-acylindoline 2, which is derived from commercially available (S)-2-indolinecarboxylic acid (3). The unknown absolute configuration of (+)-1 is determined as (9S,10R).