(2S,3R)-allyl-(2-tert-butoxycarbonylamino-3-methoxymethoxy-pent-4-enyl)-carbamic acid benzyl ester                                                                                                                                                              在
                                                                                                                                                                                 
Grubbs catalyst first generation                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以78.5%的产率得到(3S,4R)-3-tert-butoxycarbonylamino-4-methoxymethoxy-2,3,4,7-tetrahydro-azepine-1-carboxylic acid benzyl ester