benzoic acid (2S,3E)-5-methylhex-3-en-2-yl ester   、                                                                                      2,2,4,4-tetramethyloxazolidine-3-carboxylic acid (1S,2S)-1-tributylstannyl-2-phenylpropyl ester                                                                                                                                                                                                                                                                                                          以52%的产率得到2,2,4,4-tetramethyloxazolidine-3-carboxylic acid (1S,2R,3E)-2,5-dimethyl-1-[(1S)-1-phenylethyl]hex-3-enyl ester