Enantioselective total synthesis of (+)-stoechospermol Via stereoselective intramolecular (2+2) photocycloaddition of the chiral butenolide
                                
                                    
                                        作者:Masahide Tanaka、Kiyoshi Tomioka、Kenji Koga                                    
                                    
                                        DOI:10.1016/s0040-4020(01)81204-7
                                    
                                    
                                        日期:1994.1
                                    
                                    Enantioselective total synthesis of (+)-stoechospermol 2, a representative of spatane diterpenes having a cis,anti,cis-tricyclo[5.3.0.0(2,6)]decane skeleton, was achieved by employing a stereo- and regioselective intramolecular (2+2) photocycloaddition of (S)-gamma-hydroxymethyl-gamma-butenolide-derived ester 10.