| —— | (1S,3S,5R,8R)-8-benzyloxycarbonyl-7-tert-butoxycarbonyl-8-hydroxymethyl-3-methoxy-1-methyl-2-oxa-7-azabicyclo[3.3.0]octane-6-one | 1309575-67-4 | C22H29NO8 | 435.474 | 
                                                                                                                                            
                                        | —— | (1S,3S,5R,8S)-8-benzyloxycarbonyl-7-tert-butoxycarbonyl-8-formyl-3-methoxy-1-methyl-2-oxa-7-azabicyclo[3.3.0]octane-6-one | 1309575-76-5 | C22H27NO8 | 433.458 | 
                                                                                                                                            
                                        | —— | (1S,3S,5R,8R)-8-benzyloxycarbonyl-8-(hydroxymethyl)-3-methoxy-1-methyl-2-oxa-7-azabicyclo[3.3.0]octane-6-one | 1309575-66-3 | C17H21NO6 | 335.357 | 
                                                                                                                                            
                                        | —— | (1S,3S,5R)-8,8-dibenzyloxycarbonyl-3-methoxy-1-methyl-2-oxa-7-azabicyclo[3.3.0]octane-6-one | 1309575-65-2 | C24H25NO7 | 439.465 | 
                                                                                                                                            
                                        | —— | (1S,3S,5R)-3-methoxy-8,8-di(methoxycarbonyl)-1-methyl-2-oxa-7-azabicyclo[3.3.0]octane-6-one | 1309575-64-1 | C12H17NO7 | 287.269 |