中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
苯甲酰胞苷 | N4-benzoylcytidine | 13089-48-0 | C16H17N3O6 | 347.327 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 5'-O-TBDMS-cytidine | 72409-16-6 | C15H27N3O5Si | 357.482 |
—— | N4-benzoyl-2',3'-didehydro-2',3'-dideoxycytidine 5'-dimethyl phosphate | 142068-18-6 | C18H20N3O7P | 421.346 |
N-[1-[(2R,5S)-5-(羟基甲基)-2,5-二氢呋喃-2-基]-2-氧代嘧啶-4-基]苯甲酰胺 | N4-benzoyl-2',3'-didehydro-2',3'-dideoxycytidine | 123413-57-0 | C16H15N3O4 | 313.313 |
2,3-二脱氧胞啶 | 2`,3`-dideoxycytidine | 7481-89-2 | C9H13N3O3 | 211.221 |
Procedures have been developed for the selective formation of (a) 2′,5′-silylated ribonucleosides and (b) 3′,5′-silylated ribonucleosides. These procedures also permit the selective silylation at either the 2′- or 3′-position of dimethoxytritylated ribonucleosides. The procedures involve nitrate or perchlorate ion catalysis for selective reaction at 2′-positions and a combination of silver ion and DABCO or 4-nitropyridine N-oxide for selective reaction at the 3′-position. During the course of this work a general and rapid procedure was developed for the preparation and isolation of the 5′-dimethoxytrityl derivatives of the four common ribonucleosides. Silver ion was found to have a marked effect on dimethoxytritylation reactions.