| —— | 
                                        diethyl (1S,2S,5R,6S)-2-benzyloxycarbonylaminospiro[bicyclo[3.1.0]hexane-4,1'-cyclopropane]-2,6-dicarboxylate | 
                                        1448707-65-0 | 
                                        C22H27NO6 | 
                                        401.459 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        dibenzyl (1S,2S,5R,6S)-2-(tert-butoxycarbonylamino)spiro[bicyclo[3.1.0]hexane-4,1'-cyclopropane]-2,6-dicarboxylate | 
                                        1448707-75-2 | 
                                        C29H33NO6 | 
                                        491.584 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        diethyl (1S,2S,5R,6S)-2-(tert-butoxycarbonylamino)spiro[bicyclo[3.1.0]hexane-4,1'-cyclopropane]-2,6-dicarboxylate | 
                                        1448707-73-0 | 
                                        C19H29NO6 | 
                                        367.442 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        diethyl (1S,2S,5R,6S)-2-[[(2S)-2-(tert-butoxycarbonylamino)propanoyl]amino]spiro[bicyclo[3.1.0]hexane-4,1'-cyclopropane]-2,6-dicarboxylate | 
                                        1448707-67-2 | 
                                        C22H34N2O7 | 
                                        438.521 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (1S,2S,5R,6S)-2-(tert-butoxycarbonylamino)spiro[bicyclo[3.1.0]hexane-4,1'-cyclopropane]-2,6-dicarboxylic acid | 
                                        1448707-74-1 | 
                                        C15H21NO6 | 
                                        311.335 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (1S,2S,5R,6S)-2-[[(2S)-2-(tert-butoxycarbonylamino)propanoyl]amino]spiro[bicyclo[3.1.0]hexane-4,1'-cyclopropane]-2,6-dicarboxylic acid | 
                                        1448707-70-7 | 
                                        C18H26N2O7 | 
                                        382.414 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (1S,2S,5R,6S)-2-[[(2S)-2-aminopropanoyl]amino]spiro[bicyclo[3.1.0]hexane-4,1′-cyclopropane]-2,6-dicarboxylic acid | 
                                        1448707-46-7 | 
                                        C13H18N2O5 | 
                                        282.296 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        diethyl (1S,2S,5R,6S)-2-aminospiro[bicyclo[3.1.0]hexane-4,1'-cyclopropane]-2,6-dicarboxylate | 
                                        1448707-66-1 | 
                                        C14H21NO4 | 
                                        267.325 |