鉴于对人类的持续威胁,抗丙型肝炎病毒(HCV)的核苷酸前药的开发被认为是许多药物化学领域的不懈努力。为了鉴定新颖的核苷氨基磷酸酯类似物以提高抗HCV活性,我们首次考虑了三个2'- C-甲基,探索了天冬氨酸(Asp)和亚氨基二乙酸(IDA)酯作为a酸酯的对应物。含有核苷,2' - C -Me-胞苷,2' - C -Me-尿苷和2'- C-Me-2'-氟尿苷。这些类似物的合成需要保护糖部分的邻二醇功能性和胞苷核苷的氨基,以在5'-羟基区域选择性地进行磷酸化反应。抗HCV数据表明,基于Asp的氨基磷酸酯的效力比亲本核苷高约550倍。Asp-ProTides的抑制活性高于Ala-ProTides,这表明Asp将成为开发新型抗病毒前药的潜在氨基酸候选物。
[EN] NOVEL ANTIVIRAL AND ANTITUMORAL COMPOUNDS<br/>[FR] NOUVEAUX COMPOSÉS ANTIVIRAUX ET ANTITUMORAUX
申请人:UNIV LEUVEN KATH
公开号:WO2015158913A1
公开(公告)日:2015-10-22
The present invention relates to novel phosphate-modified nucleosides, such as phosphoramidate nucleosides. The invention also relates to the use of these novel phosphate-modified nucleosides to treat or prevent viral infections and proliferative diseases (such as cancer) and their use to manufacture a medicine to treat or prevent viral infections and proliferative diseases particularly infections with viruses belonging to the HCV family.
Processes for producing azetidine-2-carboxylic acid and intermediates
申请人:Kaneka Corporation
公开号:US06150535A1
公开(公告)日:2000-11-21
The present invention has its object to provide a process for producing azetidine-2-carboxylic acid and an intermediate thereof, which is efficient and economical and suited for industrial practice. The present invention is related to a process for producing azetidine-2-carboxylic acid of the following formula (5), which comprises subjecting a 4-oxo-2-azetidinecarboxylic acid derivative represented by the general formula (1) to hydride reduction to give azetidine-2-methanol of the following formula (2), treating the same with an amino-protecting agent to give N-protected azetidine-2-methanol represented by the following general formula (3), treating this with an oxidizing agent to give N-protected azetidine-2-carboxylic acid represented by the following general formula (4) and, further, subjecting the amino-protecting group thereof to elimination.
[EN] NOVEL PRODRUGS OF MIZORIBINE<br/>[FR] NOUVEAUX PROMÉDICAMENTS DE MIZORIBINE
申请人:UNIV LEUVEN KATH
公开号:WO2018134399A1
公开(公告)日:2018-07-26
The present invention relates to novel prodrugs of mizoribine, and a method for their preparation, as well as to pharmaceutical compositions comprising these prodrugs and one or more pharmaceutically acceptable excipients. The present invention further relates to the use of said novel prodrugs as biologically active ingredients, specifically in combination with other biologically active drugs such as immunosuppressants and/or immunomodulatory drugs, more specifically as medicaments for the treatment of disorders and pathologic conditions such as, but not limited to, immune and autoimmune disorders, organ and cells transplant rejection.
Convergent and Selective Synthesis of Pyrrolidinones, Piperidinones, Dihydropyridinones and Pyridinols from a Common Intermediate - Potential Precursors of Bioactive Products
作者:Mouhamad Jida、Jean Ollivier
DOI:10.1002/ejoc.200800380
日期:2008.8
furnish racemic pyrrolidinones as a mixture of diastereomers and piperidinones. In contrast, the synthesis of optically active dihydropyridinones was achieved through a one-pot FeCl3/AcONa reaction or performed by using bis(sym-collidine)iodine hexafluorophosphate. Furthermore, whereas the palladium-mediated hydrogenolysis of these dihydropyridinones furnished both chiral piperidinones and original pyridinols