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【结 构 式】

【分子编号】61756

【品名】(3R,5S)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-3-hydroxydihydro-2(3H)-furanone

【CA登记号】

【 分 子 式 】C21H26O4Si

【 分 子 量 】370.52054

【元素组成】C 68.07% H 7.07% O 17.27% Si 7.58%

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:(III)

The protection of 5(S)-(hydroxymethyl)tetrahydrofuran-2-one with Tbdps-Cl and imidazole gives the silyl ether (II), which is oxidized by means of LiHMDS and MoOPH in THF to yield 5(R)-(tert-butyldiphenylsilyloxymethyl)-3(R)-hydroxytetrahydrofuran-2-one (III). The fluorination of (III) by means of Et2N-SF3 (DAST) in dichloromethane affords 5(R)-(tert-butyldiphenylsilyloxymethyl)-3(S)-fluorotetrahydrofuran-2-one (IV), which is reduced with DIBAL to provide the alcohol (V). The acylation of (V) with Ac2O and pyridine gives the acetate (VI), which is converted into the bromide (VII) by reaction with Tms-Br and BiBr3. The condensation of (VII) with 6-chloro-9-(trimethylsilyl)purine (VIII) yields the glycosylated chloropurine (IX), which is then desilylated by means of TBAF in THF to afford the chloronucleoside (X). Finally, this compound is treated with ammonia in methanol at 100 C in a pressure vessel to provide the target Lodenosine.

1 Choudhury, A.; et al.; A concise synthesis of anti-viral agent F-ddA, starting from (S)-dihydro-5-(hydroxymethyl)-2(3H)-furanone. Tetrahedron Lett 2003, 44, 2, 247.
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) 12008 (5S)-5-(Hydroxymethyl)dihydro-2(3H)-furanone; (S)-(+)-Dihydro-5-(hydroxymethyl)-2(3h)-furanone 32780-06-6 C5H8O3 详情 详情
(II) 12215 (5S)-5-([[tert-Butyl(diphenyl)silyl]oxy]methyl)dihydro-2(3H)-furanone C21H26O3Si 详情 详情
(III) 61756 (3R,5S)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-3-hydroxydihydro-2(3H)-furanone C21H26O4Si 详情 详情
(IV) 61757 (3S,5S)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-3-fluorodihydro-2(3H)-furanone C21H25FO3Si 详情 详情
(V) 61758 (3S,5S)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-3-fluorotetrahydro-2-furanol C21H27FO3Si 详情 详情
(VI) 61759 (2R,3S,5S)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-3-fluorotetrahydro-2-furanyl acetate C23H29FO4Si 详情 详情
(VII) 61760 [(2S,4S,5R)-5-bromo-4-fluorotetrahydro-2-furanyl]methyl tert-butyl(diphenyl)silyl ether; {[(2S,4S,5R)-5-bromo-4-fluorotetrahydro-2-furanyl]methoxy}(tert-butyl)diphenylsilane C21H26BrFO2Si 详情 详情
(VIII) 17727 6-chloro-9-(trimethylsilyl)-9H-purine C8H11ClN4Si 详情 详情
(IX) 61761 9-[(2R,3S,5S)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-3-fluorotetrahydro-2-furanyl]-9H-purin-6-amine; 9-[(2R,3S,5S)-5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-3-fluorotetrahydro-2-furanyl]-9H-purin-6-ylamine C26H30FN5O2Si 详情 详情
(X) 17712 [(2S,4S,5R)-5-(6-chloro-9H-purin-9-yl)-4-fluorotetrahydro-2-furanyl]methanol C10H10ClFN4O2 详情 详情
Extended Information