tetrabutylammonium (3S,4S)-3-<(R)-1-(benzyloxycarbonyloxy)ethyl>-4-<(S)-1-(N,N-dimethylcarbamoyloxy)ethyl>-2-azetidinone-1-sulfonate                                                                                                                                                              在
                                                                                                                                         palladium on activated charcoal                                                                                                                                                                                                                               
氢气                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以89%的产率得到potassium (3S,4S)-4-<(S)-1-(N,N-dimethylcarbamoyloxy)ethyl>-3-<(R)-1-hydroxyethyl>-2-azetidinone-1-sulfonate