Diastereoselective formal total synthesis of (±)-triptolide via a novel cationic cyclization of 2-alkenyl-1,3-dithiolane
                                
                                    
                                        作者:Sylvie Goncalves、Paul Hellier、Marc Nicolas、Alain Wagner、Rachid Baati                                    
                                    
                                        DOI:10.1039/c0cc00250j
                                    
                                    
                                        日期:——
                                    
                                    A concise and diastereoselective formal total synthesis of triptolide, a natural product with a wide range of biological properties, is described. The key reaction is an unprecedented 6-endo-Trig cationic cyclization of a 2-alkenyl-1,3-dithiolane precursor induced by TMSOTf as Lewis acid.
                                    描述了
雷公藤甲素的简明和非对映选择性正式全合成,
雷公藤甲素是具有广泛
生物学特性的
天然产物。关键反应是TMSOTf作为
路易斯酸诱导的2-烯基-1,3-二
硫杂
环戊烷前体的6-内-Trig阳离子环空化。