Chemoenzymatic synthesis of novel adenosine carbanucleoside analogues containing a locked 3′-methyl-2′,3′-β-oxirane-fused system
摘要:
Starting from a readily available enantiopure building block, a straightforward enantioselective approach to 3 '-methyl-2 ',3 '- beta-oxirane-fused carbanucleosides bearing adenosine analogues is detailed. The key steps in the syntheses involved a lipase-catalyzed regioseleclive monoacylation of a diol to obtain the key intermediate and direct coupling of this key intermediate with diversely substituted purine nucleobases under Mitsunobu reaction conditions providing only the N-9 target molecules. (c) 2007 Elsevier Ltd. All rights reserved.
The invention provides a compound of Formula (I)
pharmaceutically acceptable salts, pro-drugs, biologically active metabolites, stereoisomers and isomers thereof wherein the variable are defined herein. The compounds of the invention are useful for treating immunological and oncological conditions.
Synthesis and Antiviral Evaluation of (-)-3′-Methylcarbovir, (-)-3′-Methylabacavir, and Modified Purine Analogues
作者:Gérard Audran、Paul Brémond、Honoré Monti、Erik De Clercq、Christophe Pannecouque
DOI:10.1055/s-0028-1083213
日期:2009.1
viral pathogens. None of the new compounds had significant antiviral activity at a concentration of 100 µg˙mL-¹, which was the highest concentration tested. stereoselective synthesis- azides - carbocyclic nucleosides - nucleobases - antiviral agents
Enantiopure ethyl (1 S,4 R)-4-hydroxy-2-methylcyclopent-2-ene-1-carboxylate, readily obtained by enzymatic kineticresolution of the corresponding racemic derivative, provided a convenient starting building block for an 11-step chiral preparation of (-)-3′-methylaristeromycin with 23% overall yield.
Stereoselective Synthesis of
Novel Aristeromycin Analogues as Potential Antiviral Agents
作者:Gérard Audran、Paul Brémond、Honoré Monti、Erik De Clercq
DOI:10.1055/s-0028-1083146
日期:——
synthesized via the SN 2 displacement of a key triflate, which was prepared from a readily available enantiopure building block in eight steps. The synthesized compounds were evaluated as potential antiviral agents against important viruses. Only the 2,6-diaminopurine derivative exhibited moderate activity against vesicular stomatitis virus.
通过关键三氟甲磺酸酯的 SN 2 置换合成了一系列 3'-甲基支化和嘌呤修饰的马兜铃霉素类似物,该三氟甲磺酸酯由易于获得的对映体纯结构单元分八步制备。合成的化合物被评估为针对重要病毒的潜在抗病毒剂。只有 2,6-二氨基嘌呤衍生物对水疱性口炎病毒表现出中等活性。
Conformationally Locked Carbocyclic Nucleosides: Synthesis of the 1-Methyl-6-oxabicyclo[3.1.0]hexane Scaffold
作者:Gérard Audran、Honoré Monti、Yoann Aubin
DOI:10.1055/s-2006-949635
日期:2006.9
This paper describes the racemic and stereoselective synthesis of novelconformationally locked 3'-methyl-2',3'-oxiranefused carbocyclic nucleosides (nucleosides numbering). The key step is the direct coupling of an alcohol bearing the 1-methyl-6-oxabicyclo[3.1.0]hexane scaffold with diversely substituted purine nucleobases under Mitsunobu reaction conditions providing only the N 9 target molecules
本文描述了新型构象锁定的 3'-甲基-2',3'-环氧乙烷稠合碳环核苷(核苷编号)的外消旋和立体选择性合成。关键步骤是在光信反应条件下将带有 1-甲基-6-氧杂双环 [3.1.0] 己烷支架的醇与不同取代的嘌呤核碱基直接偶联,仅提供 N 9 目标分子。