Silylation of 5-fluoro-6-hydroxy or alkoxy pyrimidine
申请人:PCR, Inc.
公开号:US04024143A1
公开(公告)日:1977-05-17
A process for producing bis-silyl derivatives of fluorinated pyrimidines is disclosed, wherein a 5-fluoro-6-hydroxy or alkoxy pyrimidine is reacted with a silane, such as triethylchlorosilane. The intermediate product produced by that reaction, which is obtained in high yield, may then be reacted with a further compound, which can be a blocked sugar halide or 2-chlorotetrahydrofuran, to produce a nucleoside of the pyrimidine. The nucleosides are useful as antibacterial and antiviral agents, and in the treatment of cancer.
A Convenient Synthesis of 5-Fluoropyrimidines Using 1-(Chloromethyl)-4-fluoro-1,4-diazabicyclo[2.cntdot.2.cntdot.2]octane Bis(tetrafluoroborate)-SELECTFLUOR Reagent
作者:G. Sankar Lal、W. Pastore、R. Pesaresi
DOI:10.1021/jo00127a046
日期:1995.11
The pyrimidine bases uracil and thymine react with the titled reagent in water to generate the corresponding fluorohydrins. Uracil fluorohydrin provides 5-fluorouracil on sublimation. Triacetyluridine reacts similarly in the presence of H2O, AcOH, or MeOH to form the respective adducts from which 5-fluorotriacetyluridine was obtained. The fluorohydrin of diacetylthymidine and the difluoromethoxy derivative of triacetylcytidine were also obtained by reaction of the nucleosides with 1-(chloromethyl)-4-fluoro-1,4-diazobicyclo[2.2.2]octane bis(tetrafluoroborate)-SELECTFLUOR in H2O and MeOH, respectively. This method represents a new practical and direct route to 5-fluoropyrimidine nucleoside.
Photochemical reactions of 5-fluoropyrimidine bases with selected alkylamines
Novel photochemical reactions between 5-fluoropyrimidine bases and primary alkylamines are described. Photoreaction of 5-fluorouracil with alkylamines in aqueous solution (pH>8) leads to 5-alkylaminouracils as the main photoproducts. Similarly, photoreaction of 5-fluorocytosine with alkylamines yields 5-alkylaminocytosines. (C) 2003 Elsevier Science Ltd. All rights reserved.
KODZIMA, ATSUSI;ODATEH, MAKOTO;ODZAKI, SEITIRO
作者:KODZIMA, ATSUSI、ODATEH, MAKOTO、ODZAKI, SEITIRO
DOI:——
日期:——
VISSER, GERARD W. M.;HERDER, RENELLA E.;DE, KANTER FRANS J. J.;HERSCHELD,+, J. CHEM. SOC. PERKIN TRANS.,(1988) N 5, 1203-1207
作者:VISSER, GERARD W. M.、HERDER, RENELLA E.、DE, KANTER FRANS J. J.、HERSCHELD,+