| —— | 
                                        1-benzyl hydrogen (2S,5S)-2-benzyloxycarbonylamino-5-hydroxy-5-[(triisopropylsilyloxy)methyl]hexanedioate | 
                                        796869-88-0 | 
                                        C31H45NO8Si | 
                                        587.786 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        benzyl (2S,5S)-5-benzyloxycarbamoyl-2-benzyloxycarbonylamino-5,6-dihydroxyhexanoate | 
                                        796869-89-1 | 
                                        C29H32N2O8 | 
                                        536.582 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        benzyl (2S,5S)-5-benzyloxycarbamoyl-2-benzyloxycarbonylamino-5-tert-butyldimethylsilyloxy-6-methylsulfonyloxyhexanoate | 
                                        796869-90-4 | 
                                        C36H48N2O10SSi | 
                                        728.936 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (3S,3'S)-1-benzyloxy-3-(3'-benzyloxycarbonyl-3'-benzyloxycarbonylaminopropyl)-3-tert-butyldimethylsilyloxy-2-azetidinone | 
                                        796869-91-5 | 
                                        C35H44N2O7Si | 
                                        632.829 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (3S,3'S)-1-benzyloxy-3-(3'-benzyloxycarbonylamino-3'-carboxypropyl)-3-tert-butyldimethylsilyloxy-2-azetidinone | 
                                        796869-92-6 | 
                                        C28H38N2O7Si | 
                                        542.704 |