(5R,6R,7R,7aR)-6,7-bis(benzyloxy)-5-(but-3-enyl)tetrahydropyrrolo[1,2-c]oxazol-3(1H)-one   、                                                                                      
1,20-bis(tert-butyldiphenylsilyloxy)eicos-10-ene-5,16-dione                                                                                                                                                              在
                                                                                                                                                                                 
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh)                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                生成                                                 (5R,5'R,6R,6'R,7R,7aR,7'R,7a'R)-5,5'-(hex-3(Z)-ene-1,6-diyl)-bis(6,7-bis(benzyloxy)tetrahydropyrrolo[1,2-c]oxazol-3(1H)-one)   、                                                                                             (5R,5'R,6R,6'R,7R,7aR,7'R,7a'R)-5,5'-(hex-3(E)-ene-1,6-diyl)-bis(6,7-bis(benzyloxy)tetrahydropyrrolo[1,2-c]oxazol-3(1H)-one)   、                                                                                             (5R,6R,7R,7aR)-6,7-bis(benzyloxy)-5-(13-tert-butyldiphenylsilyloxy-9-oxotridec-3(Z)-enyl)tetrahydropyrrolo[1,2-c]oxazol-3(1H)-one   、                                                                                             
(5R,6R,7R,7aR)-6,7-bis(benzyloxy)-5-(13-tert-butyldiphenylsilyloxy-9-oxotridec-3(E)-enyl)tetrahydropyrrolo[1,2-c]oxazol-3(1H)-one