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【结 构 式】

【分子编号】56927

【品名】1-{(2S,3R,5R)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-3-[(2,4,6-triisopropylphenyl)sulfanyl]tetrahydro-2-furanyl}-5-fluoro-2,4(1H,3H)-pyrimidinedione

【CA登记号】

【 分 子 式 】C40H51FN2O4SSi

【 分 子 量 】703.0059232

【元素组成】C 68.34% H 7.31% F 2.7% N 3.98% O 9.1% S 4.56% Si 4%

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:(XXXVI)

Condensation of the chiral lactone (IV) with 2,4,6-tris-isopropylphenylsulfanyl chloride (XXXII) by means of LiHMDS and TMS-OTf in THF gives the adduct (XXXIII), which is reduced with DIBAL in toluene to yield the lactol (XXXIV). Reaction of compound (XXXIV) with Ac2O and pyridine in THF affords the acetoxy derivative (XXXV), which is condensed with the silylated 5-fluorouracil (XXIII) by means of SnCl4 in dichloromethane to provide the nucleoside (XXXVI). Oxidation of the sulfanyl group of (XXXVI) with magnesium monoperoxyphthalate (MMPP) in THF, followed by desulfurization by heating with DBU in refluxing toluene, gives 5'-O-TBDPS-2',3'-dideoxy-2',3'-didehydro-5-fluoro-b-L-uridine (XXXVII), which by treatment with Bu4NF in THF yields 2',3'-dideoxy-2',3'-didehydro-b-L-uridine (XXXIX). Finally, this compound is converted into 2',3'-dideoxy-2',3'-didehydro-b-L-cytidine by conventional methods.

1 Bayes, M.; Sorbera, L.A.; Castaner, J.; ACH-126443. Drugs Fut 2002, 27, 12, 1131.
2 Schinazi, R.F.; Liotta, D.C. (Emory University); [5-Carboxamido or 5-fluoro]-[2',3'-unsaturated or 3'-modified]-pyrimidine nucleosides. EP 0805683; JP 1998512887; US 5703058; WO 9622778 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(IV) 56922 (5R)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)dihydro-2(3H)-furanone C21H26O3Si 详情 详情
(XXIII) 47859 5-fluoro-2-[(trimethylsilyl)oxy]-4-pyrimidinyl trimethylsilyl ether; 5-fluoro-2,4-bis[(trimethylsilyl)oxy]pyrimidine 17242-85-2 C10H19FN2O2Si2 详情 详情
(XXXII) 56923 2,4,6-triisopropylbenzenesulfenyl chloride C15H23ClS 详情 详情
(XXXIII) 56924 (3R,5R)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-3-[(2,4,6-triisopropylphenyl)sulfanyl]dihydro-2(3H)-furanone C36H48O3SSi 详情 详情
(XXXIV) 56925 (3R,5R)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-3-[(2,4,6-triisopropylphenyl)sulfanyl]tetrahydro-2-furanol C36H50O3SSi 详情 详情
(XXXV) 56926 (3R,5R)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-3-[(2,4,6-triisopropylphenyl)sulfanyl]tetrahydro-2-furanyl acetate C38H52O4SSi 详情 详情
(XXXVI) 56927 1-{(2S,3R,5R)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-3-[(2,4,6-triisopropylphenyl)sulfanyl]tetrahydro-2-furanyl}-5-fluoro-2,4(1H,3H)-pyrimidinedione C40H51FN2O4SSi 详情 详情
(XXXVII) 56928 1-[(2S,5R)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-2,5-dihydro-2-furanyl]-5-fluoro-2,4(1H,3H)-pyrimidinedione C25H27FN2O4Si 详情 详情
(XXXIX) 56929 5-fluoro-1-[(2S,5R)-5-(hydroxymethyl)-2,5-dihydro-2-furanyl]-2,4(1H,3H)-pyrimidinedione C9H9FN2O4 详情 详情
Extended Information