| —— | (1aS,2S,4aR,4bS,5S)-5-tert-butoxy-2-tert-butyldiphenylsiloxymethyl-4-oxo-pyrrolidino[1,2-b]isoxazolidino[4,5-c]tetrahydrofuran | 901120-05-6 | C29H39NO5Si | 509.718 | 
                                                                                                                                            
                                        | —— | (1aS,2S,4aR,4bS,5S)-5-tert-butoxy-2-hydroxymethyl-4-oxo-pyrrolidino[1,2-b]isoxazolidino[4,5-c]tetrahydrofuran | 901120-04-5 | C13H21NO5 | 271.313 | 
                                                                                                                                            
                                        | —— | (1aS,2R,4aR,4bS,5S,1'R)-5-tert-butoxy-2-(1',2'-dihydroxyethyl)-4-oxo-pyrrolidino[1,2-b]isoxazolidino[4,5-c]tetrahydrofuran | 901120-02-3 | C14H23NO6 | 301.34 | 
                                                                                                                                            
                                        | —— | (1aS,2R,4aR,4bS,5S)-5-tert-butoxy-2-formyl-4-oxo-pyrrolidino[1,2-b]isoxazolidino[4,5-c]tetrahydrofuran | 901120-03-4 | C13H19NO5 | 269.298 |