2-萘甲醛   、                                                                                      
(5S,6R,1'R,2'R,4'R)-3,4,5,6-tetrahydro-5-methyl-4-(1,7,7-trimethylbicyclo[2.2.1]hept-2-yl)-6-phenyl-3-propionyl-2H-1,3,4-oxadiazin-2-one                                                                                                                                                              在
                                                                                                                                                                                 
四氯化钛   、                                                                                                  
三乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以88%的产率得到(5S,6R,1'R,2'R,4'R,2''S,3''S)-3,4,5,6-tetrahydro-3-(3-hydroxy-2-methyl-3-naphthalen-2-yl-propionyl)-5-methyl-6-phenyl-4-(1,7,7-trimethylbicyclo[2.2.1]hept-2-yl)-2H-1,3,4-oxadiazin-2-one