中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
尿嘧啶核苷 | uridine | 58-96-8 | C9H12N2O6 | 244.204 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 3'-O-methyl-5'-O-(monomethoxytrityl)uridine | 174020-29-2 | C30H30N2O7 | 530.577 |
—— | 2'-O-methyl-5'-O-(monomethoxytrityl)uridine | 138935-28-1 | C30H30N2O7 | 530.577 |
—— | 3',5'-di-O-trityluridine | 4710-75-2 | C47H40N2O6 | 728.844 |
—— | 2',5'-di-O-trityluridine | 6554-11-6 | C47H40N2O6 | 728.844 |
—— | 2'-O-(tert-butyldimethylsilyl)-5'-O-(4-methoxytrityl)uridine | 65109-15-1 | C35H42N2O7Si | 630.813 |
—— | 1-{(2R,3R,4S,5R)-3,4-Dihydroxy-5-[(4-methoxy-phenyl)-diphenyl-methoxymethyl]-tetrahydro-furan-2-yl}-3-(4-methoxy-benzoyl)-1H-pyrimidine-2,4-dione | 185761-17-5 | C37H34N2O9 | 650.685 |
—— | N3-(4-methoxybenzoyl)-2'-O-methyl-5'-O-(monomethoxytrityl)uridine | 185761-18-6 | C38H36N2O9 | 664.712 |
尿嘧啶核苷 | uridine | 58-96-8 | C9H12N2O6 | 244.204 |
—— | N3-<(methoxyethoxy)methyl>uridine | 89257-63-6 | C13H20N2O8 | 332.31 |
—— | (R)-2-[(R)-1-(2,4-Dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-2-oxo-ethoxy]-3-[(4-methoxy-phenyl)-diphenyl-methoxy]-propionaldehyde | 537041-04-6 | C29H26N2O7 | 514.535 |
—— | 2',3'-bis-O-(tert-butyldimethylsilyl)uridine | —— | C21H40N2O6Si2 | 472.729 |
A very simple and efficient method is described for the protection of alcohols and nucleosides with benzyl monomethoxytrityl and benzyl dimethoxytrityl ethers in the presence of diethylazodicarboxylate and a catalytic amount of ceric triflate. High selectivity was observed for the tritylation of 5′-OH function of nucleosides.
An efficient copper-catalyzed method for the regioselective synthesis of β-difluoroester substituted enamides using BrCF2CO2Et is reported for the first time.