3-(phenylthio)propenal   、                                                                                      
N-Acetyl-(1S,5R,7R)-10,10-dimethyl-3-oxo-2-aza-4-oxatricyclo<5.2.1.01,5>decane                                                                                                                                                              在
                                                                                                                                                                                 
四氯化钛   、                                                                                                  
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 N-<(S)-3-hydroxy-5-phenylthio-4-pentenoyl>-(1S,5R,7R)-10,10-dimethyl-3-oxo-2-aza-4-oxatricyclo<5.2.1.0
1,5>decane   、                                                                                             N-<(R)-3-hydroxy-5-phenylthio-4-pentenoyl>-(1S,5R,7R)-10,10-dimethyl-3-oxo-2-aza-4-oxatricyclo<5.2.1.0
1,5>decane