| —— | 
                                        5'-{3-[(3'R)-5'-(4,4'-Dimethoxytrityl)-3'-deoxythymidin-3'-yl]-2-oxopropyl}-5'-deoxythymidine | 
                                        202719-45-7 | 
                                        C44H48N4O11 | 
                                        808.885 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        3'-O-Acetyl-5'-{3-[(3'R)-5'-(4,4'-dimethoxytrityl)-3'-deoxythymidin-3'-yl]-2-oxopropyl}-5'-deoxythymidine | 
                                        202719-44-6 | 
                                        C46H50N4O12 | 
                                        850.923 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        3'-O-Acetyl-5'-[3-((3'R)-3'-deoxythymidin-3'-yl)-2-oxopropyl]-5'-deoxythymidine | 
                                        202719-32-2 | 
                                        C25H32N4O10 | 
                                        548.55 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        [(2R,3S,5R)-2-[4-[(2S,3R,5R)-2-(hydroxymethyl)-5-[5-methyl-2,4-dioxo-3-(2-trimethylsilylethoxymethyl)pyrimidin-1-yl]oxolan-3-yl]-3-oxobutyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl] acetate | 
                                        202719-31-1 | 
                                        C31H46N4O11Si | 
                                        678.812 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (E)-3'-O-Acetyl-5'-{3-[(3'R)-3-benzyloxymethyl-5'-O-(tert-butyldimethylsilyl)-3'-deoxythymidin-3'-yl]-2-oxopropylidene}-5'-deoxythymidine | 
                                        202719-38-8 | 
                                        C39H52N4O11Si | 
                                        780.948 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (E)-3'-O-Acetyl-5'-(3-{(3'R)-5'-O-(tert-butyldimethylsilyl)-3-[(2-trimethylsilylethoxy)methyl]-3'-deoxythymidin-3'-yl}-2-oxopropylidene)-5'-deoxythymidine | 
                                        202719-30-0 | 
                                        C37H58N4O11Si2 | 
                                        791.059 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        3-Benzyloxymethyl-1-[(2R,4R,5S)-5-(tert-butyl-dimethyl-silanyloxymethyl)-4-(2-imidazol-1-yl-2-oxo-ethyl)-tetrahydro-furan-2-yl]-5-methyl-1H-pyrimidine-2,4-dione | 
                                        202724-78-5 | 
                                        C29H40N4O6Si | 
                                        568.745 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        3-Benzyloxymethyl-1-{(2R,4R,5S)-5-(tert-butyl-dimethyl-silanyloxymethyl)-4-[2-oxo-3-(triphenyl-λ5-phosphanylidene)-propyl]-tetrahydro-furan-2-yl}-5-methyl-1H-pyrimidine-2,4-dione | 
                                        202719-37-7 | 
                                        C45H53N2O6PSi | 
                                        776.985 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        [(2S,3R,5R)-5-(3-Benzyloxymethyl-5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-2-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-3-yl]-acetic acid | 
                                        202719-35-5 | 
                                        C26H38N2O7Si | 
                                        518.682 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        [(2S,3R,5R)-5-(3-Benzyloxymethyl-5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-2-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-3-yl]-acetaldehyde | 
                                        202719-34-4 | 
                                        C26H38N2O6Si | 
                                        502.683 | 
                                    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
                                                        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
                                        | —— | 
                                        1-[(2R,4R,5S)-5-(tert-Butyl-dimethyl-silanyloxymethyl)-4-(2-imidazol-1-yl-2-oxo-ethyl)-tetrahydro-furan-2-yl]-5-methyl-3-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrimidine-2,4-dione | 
                                        202724-76-3 | 
                                        C27H46N4O6Si2 | 
                                        578.856 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        1-{(2R,4R,5S)-5-(tert-Butyl-dimethyl-silanyloxymethyl)-4-[2-oxo-3-(triphenyl-λ5-phosphanylidene)-propyl]-tetrahydro-furan-2-yl}-5-methyl-3-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrimidine-2,4-dione | 
                                        202719-28-6 | 
                                        C43H59N2O6PSi2 | 
                                        787.096 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        1-[(2R,4S,5S)-4-Allyl-5-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-2-yl]-3-benzyloxymethyl-5-methyl-1H-pyrimidine-2,4-dione | 
                                        202719-33-3 | 
                                        C27H40N2O5Si | 
                                        500.711 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        {(2S,3R,5R)-2-(tert-Butyl-dimethyl-silanyloxymethyl)-5-[5-methyl-2,4-dioxo-3-(2-trimethylsilanyl-ethoxymethyl)-3,4-dihydro-2H-pyrimidin-1-yl]-tetrahydro-furan-3-yl}-acetic acid | 
                                        202719-25-3 | 
                                        C24H44N2O7Si2 | 
                                        528.794 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        {(2S,3R,5R)-2-(tert-Butyl-dimethyl-silanyloxymethyl)-5-[5-methyl-2,4-dioxo-3-(2-trimethylsilanyl-ethoxymethyl)-3,4-dihydro-2H-pyrimidin-1-yl]-tetrahydro-furan-3-yl}-acetaldehyde | 
                                        202719-23-1 | 
                                        C24H44N2O6Si2 | 
                                        512.794 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        1-[(2R,4S,5S)-4-Allyl-5-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-2-yl]-5-methyl-3-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrimidine-2,4-dione | 
                                        202719-22-0 | 
                                        C25H46N2O5Si2 | 
                                        510.822 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        5'-O-(tert-butyldimethylsilyl)-3'-C-allyl-2',3'-dideoxythymidine | 
                                        120232-08-8 | 
                                        C19H32N2O4Si | 
                                        380.56 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        3'-O-acetylthymidine | 
                                        21090-30-2 | 
                                        C12H16N2O6 | 
                                        284.269 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        O3'-acetyl-5'-oxo-5'-deoxy-thymidine | 
                                        5983-15-3 | 
                                        C12H14N2O6 | 
                                        282.253 |