(6S,9S,12S)-12-benzyloxycarbonylamino-9-isobutyl-8,11-dioxo-2-oxa-7,10-diazabicyclo[12.2.2]octadeca-1(17),14(18),15-triene-6-carboxylic acid methyl ester                                                                                                                                                              在
                                                                                                                                                                                 lithium aluminium tetrahydride   、                                                                                                  
甲醇                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以83%的产率得到((6S,9S,12S)-6-hydroxymethyl-9-isobutyl-8,11-dioxo-2-oxa-7,10-diaza-bicyclo[12.2.2]octadeca-1(17),14(18),15-trien-12-yl)-carbamic acid benzyl ester