合成路线:The protection of cytidine (I) with 1,3-dichloro-1,1,3,3-tetraisopropyldisiloxane (II) and dimethylformamide dimethylacetal (A) in pyridine gives the fully protected cytidine (III),which is oxidized with oxalyl chloride in DMSO/dichloromethane yielding the 2'-deoxy-2'-oxo derivative (IV).The reaction of (IV) with fluoromethyl phenyl sulfone (B) by means of diethyl chlorophosphate and lithium hexamethyldisylazide in THF affords the fluorovinyl sulfone (V) as a mixture of (E) and (Z) isomers that is separated by flash chromatography.The (Z)-isomer (V) is treated with tributyl tin hydride and AIBN in refluxing benzene to give the fluorovinyl stannane (VI),which is finally treated with KF in refluxing methanol to afford the target compound.
参考文献标题:A process for the preparation of ribonucleotide reductase inhibitors
文献作者:Mathews,D.P.; McCarthy,J.R.; Sabol,J.S.(Aventis Pharmaceuticals,Inc.)
参考来源:WO 9323414
合成路线:The protection of cytidine (I) with 1,3-dichloro-1,1,3,3-tetraisopropyldisiloxane (II) and dimethylformamide dimethylacetal (A) in pyridine gives the fully protected cytidine (III),which is oxidized with oxalyl chloride in DMSO/dichloromethane yielding the 2'-deoxy-2'-oxo derivative (IV).The reaction of (IV) with fluoromethyl phenyl sulfone (B) by means of diethyl chlorophosphate and lithium hexamethyldisylazide in THF affords the fluorovinyl sulfone (V) as a mixture of (E) and (Z) isomers that is separated by flash chromatography.The (Z)-isomer (V) is treated with tributyl tin hydride and AIBN in refluxing benzene to give the fluorovinyl stannane (VI),which is finally treated with KF in refluxing methanol to afford the target compound.
参考文献标题:Monohydrate of (E)-2'-deoxy-2'-(fluoromethylene)cytidine
文献作者:Donaldson,R.E.(Aventis Pharmaceuticals,Inc.)
参考来源:WO 9518815
合成路线:The protection of cytidine (I) with 1,3-dichloro-1,1,3,3-tetraisopropyldisiloxane (II) and dimethylformamide dimethylacetal (A) in pyridine gives the fully protected cytidine (III),which is oxidized with oxalyl chloride in DMSO/dichloromethane yielding the 2'-deoxy-2'-oxo derivative (IV).The reaction of (IV) with fluoromethyl phenyl sulfone (B) by means of diethyl chlorophosphate and lithium hexamethyldisylazide in THF affords the fluorovinyl sulfone (V) as a mixture of (E) and (Z) isomers that is separated by flash chromatography.The (Z)-isomer (V) is treated with tributyl tin hydride and AIBN in refluxing benzene to give the fluorovinyl stannane (VI),which is finally treated with KF in refluxing methanol to afford the target compound.
参考文献标题:Method of treating a neoplastic disease state by conjunctive therapy with 2'-fluoromethylidene derivs.and radioation or chemotherapy
文献作者:Snyder,R.D.(Aventis Pharmaceuticals,Inc.)
参考来源:WO 9601638
合成路线:The acetylation of uridine (I) with acetic anhydride gives the 2',3',5'-triacetyl derivative (II),which is treated with SOCl2 and sodium ethoxide yielding the 4-ethoxypyrimidinone (III).The partial protection of (III) with 1,3-dichloro-1,1,3,3-tetraisopropyldisiloxane (IV) yields the silylated compound (V),which is oxidized with oxalyl chloride to the silylated furanone (VI).The reaction of (VI) with fluoromethyl phenyl sulfone (A) by means of diethyl chlorophosphate (B) and lithium hexamethyldisylazide in THF affords the fluorovinyl sulfone (VII) as a mixture of (E) and (Z) isomers that is separated by flash chromatography.The (Z)-isomer (VII) is treated with tributyl tin hydride and AIBN in refluxing benzene to give the fluorovinyl stannane (VIII),which is finally treated with CsF and NH3 in refluxing methanol to afford the target compound.
参考文献标题:Treatment of carcinoma by administration of 2'-halomethylidenyl-2'-deoxynucleosides
文献作者:McCarthy,J.R.; Matthews,D.P.; Bitonti,A.J.; Edwards,M.L.(Merrell Pharmaceuticals,Inc.)
参考来源:US 5607925
合成路线:The acetylation of uridine (I) with acetic anhydride gives the 2',3',5'-triacetyl derivative (II),which is treated with SOCl2 and sodium ethoxide yielding the 4-ethoxypyrimidinone (III).The partial protection of (III) with 1,3-dichloro-1,1,3,3-tetraisopropyldisiloxane (IV) yields the silylated compound (V),which is oxidized with oxalyl chloride to the silylated furanone (VI).The reaction of (VI) with fluoromethyl phenyl sulfone (A) by means of diethyl chlorophosphate (B) and lithium hexamethyldisylazide in THF affords the fluorovinyl sulfone (VII) as a mixture of (E) and (Z) isomers that is separated by flash chromatography.The (Z)-isomer (VII) is treated with tributyl tin hydride and AIBN in refluxing benzene to give the fluorovinyl stannane (VIII),which is finally treated with CsF and NH3 in refluxing methanol to afford the target compound.
参考文献标题:2'-Ethenylidene cytidine,uridine and guanosine derivs.
文献作者:McCarthy,J.R.; Matthews,D.P.; Edwards,M.L.(Merrell Pharmaceuticals,Inc.)
参考来源:US 5616702
合成路线:The acetylation of uridine (I) with acetic anhydride gives the 2',3',5'-triacetyl derivative (II),which is treated with SOCl2 and sodium ethoxide yielding the 4-ethoxypyrimidinone (III).The partial protection of (III) with 1,3-dichloro-1,1,3,3-tetraisopropyldisiloxane (IV) yields the silylated compound (V),which is oxidized with oxalyl chloride to the silylated furanone (VI).The reaction of (VI) with fluoromethyl phenyl sulfone (A) by means of diethyl chlorophosphate (B) and lithium hexamethyldisylazide in THF affords the fluorovinyl sulfone (VII) as a mixture of (E) and (Z) isomers that is separated by flash chromatography.The (Z)-isomer (VII) is treated with tributyl tin hydride and AIBN in refluxing benzene to give the fluorovinyl stannane (VIII),which is finally treated with CsF and NH3 in refluxing methanol to afford the target compound.
参考文献标题:Stereospecific method to E and Z terminal fluoro olefins and its application to the synthesis of 2'-deoxy-2'-fluoromethylene nucleosides as potential inhibitors of ribonucleoside diphosphate reductase
文献作者:McCarthy,J.R.; et al.
参考来源:J Am Chem Soc 1991,113(19),7439
产品链接: CAS No. 130306-02-4›› 产品链接: CAS No.171176-43-5››