Synthesis and Conformational Analysis of 2‘-Fluoro-5-methyl-4‘-thioarabinouridine (4‘S-FMAU)
摘要:
An improved synthesis of 2'-deoxy-2'-fluoro-5-methyl-4'-thioarabinouridine (4'S-FMAU) is described. Participation of the 3'-O-benzoyl protecting group in the thiosugar precursor influenced the stereochemistry of the N-glycosylation reaction in nonpolar solvents, permitting a higher beta/alpha ratio than previously observed for similar Lewis acid catalyzed glycosylations. Conformational analysis of the nucleoside using (3)J(HH) and (3)J(HF) NMR coupling constants together with the PSEUROT program showed that it adopted a predominantly northern conformation in contrast to 2'-deoxy-2'-fluoro-5-methylarabinouridine (FMAU), whose PSEUROT conformational analysis is presented here for the first time, which showed a dominantly southeast conformation. The sharp conformational switch attained by replacing the ring heteroatom is attributed to a decrease in relevant steric and stereoelectronic effects.
Synthesis and Conformational Analysis of 2‘-Fluoro-5-methyl-4‘-thioarabinouridine (4‘S-FMAU)
摘要:
An improved synthesis of 2'-deoxy-2'-fluoro-5-methyl-4'-thioarabinouridine (4'S-FMAU) is described. Participation of the 3'-O-benzoyl protecting group in the thiosugar precursor influenced the stereochemistry of the N-glycosylation reaction in nonpolar solvents, permitting a higher beta/alpha ratio than previously observed for similar Lewis acid catalyzed glycosylations. Conformational analysis of the nucleoside using (3)J(HH) and (3)J(HF) NMR coupling constants together with the PSEUROT program showed that it adopted a predominantly northern conformation in contrast to 2'-deoxy-2'-fluoro-5-methylarabinouridine (FMAU), whose PSEUROT conformational analysis is presented here for the first time, which showed a dominantly southeast conformation. The sharp conformational switch attained by replacing the ring heteroatom is attributed to a decrease in relevant steric and stereoelectronic effects.
The present invention relates to a solid form of a compound of Formula (I), a method for preparing the solid form, a pharmaceutical composition comprising the solid form, and the use of the solid form in the treatment of a disease involving abnormal cell proliferation or a viral infectious disease.
[EN] PROCESS FOR PREPARING SUBSTITUTED 1-O-ACYL-2-DEOXY-2-FLUORO-4-THIO-ß-D-ARABINOFURANOSES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE 1-O-ACYL-2-DÉSOXY-2-FLUORO-4-THIO-ß-D-ARABINOFURANOSES SUBSTITUÉS
申请人:LIBRAMEDICINA INC
公开号:WO2011074484A1
公开(公告)日:2011-06-23
The present invention relates to a process for preparing 1-O-acyl-2-deoxy-2-fluoro-4-thio-ƒタ-D-arabinofuranoses having formula I and intermediates thereof: wherein R1 represents -C(O)-C1-C6-alkyl or -C(O)-aryl; and R2 represents C1-C6-alkyl, C1-C4-perfluoroalkyl or aryl.
PROCESS FOR PREPARING SUBSTITUTED 1-O-ACYL-2-DEOXY-2-FLUORO-4-THIO-BETA-D-ARABINOFURANOSES
申请人:Voigtländer David
公开号:US20110152542A1
公开(公告)日:2011-06-23
The present invention relates to a process for preparing 1-O-acyl-2-deoxy-2-fluoro-4-thio-β-D-arabinofuranoses having formula I and intermediates thereof:
wherein R
1
represents —C(O)—C
1
-C
6
-alkyl or —C(O)-aryl; and R
2
represents C
1
-C
6
-alkyl, C
1
-C
4
-perfluoroalkyl or aryl.
Process for preparing substituted 1-O-acyl-2-deoxy-2-fluoro-4-thio-ß-D-arabinofuranoses
申请人:LibraMedicina, Inc.
公开号:EP2388257A1
公开(公告)日:2011-11-23
The present invention relates to a process for preparing 1-0-acyl-2-deoxy-2-fluoro-4-thio-β-D-arabinofuranoses
in which
R1
represents C(O)-C1-C6-alkyl or C(O)-aryl;
R2
represents C1-C6-alkyl, C1-C4-perfluoroalkyl or aryl,
and also its intermediates as such.
Process for preparing substituted 1-O-acyl-2-deoxy-2-fluoro-4-thio-beta-D-arabinofuranoses
申请人:Libramedicina, Inc.
公开号:EP2799432A1
公开(公告)日:2014-11-05
The present invention relates to a process for preparing 1-O-acyl-2-deoxy-2-ftuoro-4-thio-β-D-arabinofuranoses having formula I and intermediates thereof:
wherein R1 represents -C(O)-C1-C6-alkyl or -C(O)-aryl; and R2 represents C1-C6-alkyl, C1-C4-perfluoroalkyl or aryl.
本发明涉及一种制备具有式 I 的 1-O-acyl-2-deoxy-2-ftuoro-4-thio-β-D-arabinofuranoses 及其中间体的工艺:
其中R1代表-C(O)-C1-C6-烷基或-C(O)-芳基;R2代表C1-C6-烷基、C1-C4-全氟烷基或芳基。