(R)-7-(tert-Butoxycarbonyl-hydrazono)-3-(1-methyl-1H-tetrazol-5-ylsulfanylmethyl)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester                                                                                                                                                              在
                                                                                                                                                                                 
硼烷四氢呋喃络合物                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以71%的产率得到(6R,7R)-7-(N'-tert-Butoxycarbonyl-hydrazino)-3-(1-methyl-1H-tetrazol-5-ylsulfanylmethyl)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester