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【结 构 式】

【分子编号】58291

【品名】{(2R,3R,5R)-3-(acetyloxy)-4-bromo-5-[5-fluoro-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]tetrahydro-2-furanyl}methyl acetate

【CA登记号】

【 分 子 式 】C13H14BrFN2O7

【 分 子 量 】409.1658432

【元素组成】C 38.16% H 3.45% Br 19.53% F 4.64% N 6.85% O 27.37%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(V)

The bromoacetylation of 5-fluorouridine (I) with 2-acetoxyisobutyryl bromide (II) in acetonitrile, ethyl acetate or dichloromethane gives a mixture of four bromoacylated compounds (III), (IV), (V) and (VI). This mixture, without separation, is treated with Zn/Ac-OH in DMF or methanol/ethyl acetate to yield two unsaturated uridine derivatives (VII) and (VIII), which are easily separated. The major isomer (VIII) is condensed with 1,2,4-triazole (IX) by means of POCl3 and TEA in acetonitrile to afford the triazolyl derivative (X), which is treated with ammonia in methanol to provide the cytidine derivative (XI). Finally, this compound is deacylated by means of NaOMe in methanol to afford the target fluorocytidine derivative.

1 Confalone, P.N.; Jin, F. (Pharmasset, Inc.); Method for the synthesis of 2',3'-dideoxy-2',3'-didehydronucleosides. WO 0270533 .
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) 32205 1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydro-2-furanyl]-5-fluoro-2,4(1H,3H)-pyrimidinedione; 5-Fluorouridine 316-46-1 C9H11FN2O6 详情 详情
(II) 12806 2-bromo-1,1-dimethyl-2-oxoethyl acetate; alpha-Acetoxy-isobutyryl bromide 40635-67-4 C6H9BrO3 详情 详情
(III) 58289 {(2R,3R,5R)-3-(acetyloxy)-4-bromo-5-[5-fluoro-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]tetrahydro-2-furanyl}methyl 2-(acetyloxy)-2-methylpropanoate C17H20BrFN2O9 详情 详情
(IV) 58290 {(2R,4S,5R)-4-(acetyloxy)-3-bromo-5-[5-fluoro-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]tetrahydro-2-furanyl}methyl 2-(acetyloxy)-2-methylpropanoate C17H20BrFN2O9 详情 详情
(V) 58291 {(2R,3R,5R)-3-(acetyloxy)-4-bromo-5-[5-fluoro-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]tetrahydro-2-furanyl}methyl acetate C13H14BrFN2O7 详情 详情
(VI) 58292 {(2R,5R)-4-(acetyloxy)-3-bromo-5-[5-fluoro-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]tetrahydro-2-furanyl}methyl acetate C13H14BrFN2O7 详情 详情
(VII) 58293 {(2S,5R)-5-[5-fluoro-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]-2,5-dihydro-2-furanyl}methyl acetate C11H11FN2O5 详情 详情
(VIII) 58294 {(2S,5R)-5-[5-fluoro-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]-2,5-dihydro-2-furanyl}methyl 2-(acetyloxy)-2-methylpropanoate C15H17FN2O7 详情 详情
(IX) 13135 1H-1,2,4-Triazole; 1,2,4-Triazole 288-88-0 C2H3N3 详情 详情
(X) 58295 2-({(2S,5R)-5-[5-fluoro-2-oxo-4-(1H-1,2,4-triazol-1-yl)-1(2H)-pyrimidinyl]-2,5-dihydro-2-furanyl}methoxy)-1,1-dimethyl-2-propenyl acetate C18H20FN5O5 详情 详情
(XI) 58296 2-({(2S,5R)-5-[4-amino-5-fluoro-2-oxo-1(2H)-pyrimidinyl]-2,5-dihydro-2-furanyl}methoxy)-1,1-dimethyl-2-propenyl acetate C16H20FN3O5 详情 详情
Extended Information