Total Synthesis of C31-Methyl Ketone Apocarotenoids 2: The First Total Synthesis of (3R)-Triophaxanthin.
                                
                                    
                                        作者:Jarle André Haugan、Pål Songe、Christian Rømming、Frode Rise、Michael P. Hartshorn、Manuela Merchán、Ward T. Robinson、Björn O. Roos、Claire Vallance、Bryan R. Wood                                    
                                    
                                        DOI:10.3891/acta.chem.scand.51-1096
                                    
                                    
                                        日期:——
                                    
                                    Five possible synthetic strategies have been developed for the synthesis of (all-E)-(3R)-triophaxanthin. A short discussion of these strategies is presented. Fully characterised, optically active (all-E)-(3R)-triophaxanthin was prepared by total synthesis for the first time, with 9% overall yield, in 13 linear steps from the readily available (4R,6R)-actinol, (2E)-3-methyl-2-penten-4-yn-1-ol, (all-E)-2,7-dimethyl-2,4,6-octatrienedial and 1,1-dimethoxypropanone.