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【结 构 式】 
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【分子编号】37611 【品名】[(2S,5R)-5-(6-hydroxy-9H-purin-9-yl)tetrahydro-2-furanyl]methyl acetate 【CA登记号】 |
【 分 子 式 】C12H14N4O4 【 分 子 量 】278.26772 【元素组成】C 51.8% H 5.07% N 20.13% O 23% |
合成路线1
该中间体在本合成路线中的序号：(VII)A new synthesis of didanosine has been described: Treatment of 2'-deoxyadenosine (I) with adenosine deaminase (ADA) in water gives 2'-deoxyinosine (II), which is treated with vinyl acetate (III) and Candida antarctica lipase (CAL) in hot pyridine yielding 5'-O-acetyl-2'-deoxyinosine (IV). The reaction of (IV) with phenyl chlorothionoformate (V) and DMAP in acetonitrile affords the corresponding thiocarbonate (VI), which is treated with tributylstannane and AIBN in hot toluene to provide 5'-O-acetyl-2',3'-dideoxyinosine (VII). Finally, this compound is deacetylated with NH3 in methanol.
| 【1】 Santaniello, E.; Ciuffreda, P.; Casati, S.; Lipase-catalyzed protection of the hydroxy groups of the nucleosides inosine and 2'-deoxyinosine: A new chemoenzymatic synthesis of the antiviral drug 2',3'-dideoxyinosine. Bioorg Med Chem Lett 1999, 9, 11, 1577. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (I) | 18061 | (2R,3S,5R)-5-(6-amino-9H-purin-9-yl)-2-(hydroxymethyl)tetrahydro-3-furanol | 958-09-8 | C10H13N5O3 | 详情 | 详情 |
| (II) | 12801 | 9-[(2R,4S,5R)-4-Hydroxy-5-(hydroxymethyl)tetrahydro-2-furanyl]-9H-purin-6-ol | 890-38-0 | C10H12N4O4 | 详情 | 详情 |
| (III) | 24543 | vinyl acetate | 108-05-4 | C4H6O2 | 详情 | 详情 |
| (IV) | 37609 | [(2R,3S,5R)-3-hydroxy-5-(6-hydroxy-9H-purin-9-yl)tetrahydro-2-furanyl]methyl acetate | C12H14N4O5 | 详情 | 详情 | |
| (V) | 25805 | 1-[(chlorocarbothioyl)oxy]benzene; Phenylchlorothioformate | 1005-56-7 | C7H5ClOS | 详情 | 详情 |
| (VI) | 37610 | [(2R,3S,5R)-5-(6-hydroxy-9H-purin-9-yl)-3-[(phenoxycarbothioyl)oxy]tetrahydro-2-furanyl]methyl acetate | C19H18N4O6S | 详情 | 详情 | |
| (VII) | 37611 | [(2S,5R)-5-(6-hydroxy-9H-purin-9-yl)tetrahydro-2-furanyl]methyl acetate | C12H14N4O4 | 详情 | 详情 |