| —— | 
                                        (E)-(S)-4-[(3R,4S)-3-Methoxy-2-oxo-4-((E)-styryl)-azetidin-1-yl]-4-((4S,5R,4'R)-2,2,2',2'-tetramethyl-[4,4']bi[[1,3]dioxolanyl]-5-yl)-but-2-enoic acid methyl ester | 
                                        502845-43-4 | 
                                        C27H35NO8 | 
                                        501.577 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (R)-[(3S,4R)-3-Methoxy-2-oxo-4-((E)-styryl)-azetidin-1-yl]-((4S,5R,4'R)-2,2,2',2'-tetramethyl-[4,4']bi[[1,3]dioxolanyl]-5-yl)-acetaldehyde | 
                                        250694-91-8 | 
                                        C24H31NO7 | 
                                        445.513 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (3R,4S)-1-[(R)-2,2-Bis-ethylsulfanyl-1-((4S,5R,4'R)-2,2,2',2'-tetramethyl-[4,4']bi[[1,3]dioxolanyl]-5-yl)-ethyl]-3-methoxy-4-((E)-styryl)-azetidin-2-one | 
                                        135637-32-0 | 
                                        C28H41NO6S2 | 
                                        551.769 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (3S,4R)-1-[(R)-2,2-Bis-ethylsulfanyl-1-((4S,5R,4'R)-2,2,2',2'-tetramethyl-[4,4']bi[[1,3]dioxolanyl]-5-yl)-ethyl]-3-methoxy-4-((E)-styryl)-azetidin-2-one | 
                                        135565-73-0 | 
                                        C28H41NO6S2 | 
                                        551.769 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        1<(1',2'-dideoxy-3',4';5',6'-di-O-isopropylidene-1'(1,3-propanedithio))-D-2'-glucosyl>-3β-methoxy-4β-styryl-2-azetidinone | 
                                        131991-01-0 | 
                                        C27H37NO6S2 | 
                                        535.726 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (E)-(S)-4-[(3S,4R)-3-Methoxy-2-oxo-4-((2R,3R)-3-phenyl-oxiranyl)-azetidin-1-yl]-4-((4S,5R,4'R)-2,2,2',2'-tetramethyl-[4,4']bi[[1,3]dioxolanyl]-5-yl)-but-2-enoic acid methyl ester | 
                                        502845-47-8 | 
                                        C27H35NO9 | 
                                        517.576 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (E)-(S)-4-[(3S,4R)-3-Methoxy-2-oxo-4-((2S,3S)-3-phenyl-oxiranyl)-azetidin-1-yl]-4-((4S,5R,4'R)-2,2,2',2'-tetramethyl-[4,4']bi[[1,3]dioxolanyl]-5-yl)-but-2-enoic acid methyl ester | 
                                        502845-46-7 | 
                                        C27H35NO9 | 
                                        517.576 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (E)-(S)-4-[(3R,4S)-3-Methoxy-2-oxo-4-((2S,3S)-3-phenyl-oxiranyl)-azetidin-1-yl]-4-((4S,5R,4'R)-2,2,2',2'-tetramethyl-[4,4']bi[[1,3]dioxolanyl]-5-yl)-but-2-enoic acid methyl ester | 
                                        502845-44-5 | 
                                        C27H35NO9 | 
                                        517.576 |