中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
3-溴-4-羟基-2(1H)-吡啶酮 | 3-bromo-2,4-dihydroxypyridine | 96245-97-5 | C5H4BrNO2 | 189.996 |
Bromination of 3-deazauracil (4-hydroxy-2-pyridinone) (1) gave the 3,5-dibromo compound (2). Selective debromination of 2 gave 5-bromo-4-hydroxy-2-pyridinone (3). Trimethylsilylation of 3 and condensation of the product (4) in situ with tetra-O-acetyl-β-D-ribofuranose (5) using tin(IV) chloride as catalyst gave 1-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-5-bromo-4-hydroxy-2-pyridinone (7). Deprotection of 7 gave 5-bromo-3-deazauridine (6). Catalytic hydrogenolysis of 7 gave 3-deazauridine triacetate (8a) and deuteriolysis gave the 5-deuterio product (8b). Deprotection of 8b gave the isotope-labeled anticancer agent, 5-deuterio-3-deazauridine (9). Biochemical and clinical implications are discussed.