Selective functionalization at the α-methyl group of 1-substituted pyridin-2(1H)- and 4(1H)-ones (2- and 4-pyridones) can be achieved by appropriate choice of base. 发现正丁基锂可实现 1-苄基-2-和-4-吡啶酮衍生物的清洁 6(2)-甲基去质子化,而六甲基二硅肼钾 (KHMDS) 是相应 1-甲基-2 甲基去质子化的首选试剂- 和 -4-吡啶酮。去质子化在 –78 °C 下顺利进行,生成的阴离子在精确的温度控制下很容易与各种亲电子试剂(醛、酮、烷基化试剂和偶氮化合物)反应,形成有用的功能化 2- 和 4- 吡啶酮和喹嗪酮.
Selective functionalization at the α-methyl group of 1-substituted pyridin-2(1H)- and 4(1H)-ones (2- and 4-pyridones) can be achieved by appropriate choice of base. 发现正丁基锂可实现 1-苄基-2-和-4-吡啶酮衍生物的清洁 6(2)-甲基去质子化,而六甲基二硅肼钾 (KHMDS) 是相应 1-甲基-2 甲基去质子化的首选试剂- 和 -4-吡啶酮。去质子化在 –78 °C 下顺利进行,生成的阴离子在精确的温度控制下很容易与各种亲电子试剂(醛、酮、烷基化试剂和偶氮化合物)反应,形成有用的功能化 2- 和 4- 吡啶酮和喹嗪酮.
ANTI-INFLAMMATORY COMPOUND, AND PREPARATION AND USE THEREOF
申请人:VivaVision Biotech, Inc.
公开号:US20200377460A1
公开(公告)日:2020-12-03
The present invention provides an anti-inflammatory compound, which is a compound having a structure (I) as shown below:
The compound is a target that is important for autoimmune activation, and that has strong inhibitory effect on PDE4 and penetrates the skin easily, and is a new type anti-inflammatory compound that is easily degraded.
Lithiation of 1-methyl-4-pyridone with n-butyl-lithium at -78 °C proceeds smoothly at the C-2 position and 2-substituted-4-pyridones (1c–j) are obtained by subsequent reaction with electorphiles; lithiation of 1-methyl-2-pyridone takes place predominantly at the N-methyl, the lithio-derivative reacting rapidly, even at -78 °C with starting pyridone to give a dimer, (3).
Nitropyridines 11. *Recyclization of quaternary nitropyridinium salts into substituted nitroanilines
作者:A. K. Garkushenko、N. V. Poendaev、M. A. Vorontsova、G. P. Sagitullina
DOI:10.1007/s10593-011-0783-3
日期:2011.7
Substituted nitroanilines have been obtained by the recyclization of nitropyridinium quaternary salts under the action of bases.
取代的硝基苯胺是通过在碱的作用下硝基吡啶鎓季盐的再循环而获得的。
Tetracyclic fused heterocyclic compound and use thereof as HCV polymerase inhibitor
申请人:Oka Takahiro
公开号:US20070049593A1
公开(公告)日:2007-03-01
The present invention relates to a tetracyclic fused heterocyclic compound represented by the following formula [I]
wherein each symbol is as defined in the specification, or a pharmaceutically acceptable a salt thereof, and a hepatitis C virus (HCV) polymerase inhibitor and a therapeutic agent for hepatitis C containing this compound. The compound of the present invention shows an anti-HCV activity based on the HCV polymerase inhibitory activity, and useful as an agent for the prophylaxis or treatment of hepatitis C.
TETRACYCLIC FUSED HETEROCYCLIC COMPOUND AND USE THEREOF AS HCV POLYMERASE INHIBITOR
申请人:Oka Takahiro
公开号:US20120070409A1
公开(公告)日:2012-03-22
The present invention relates to a tetracyclic fused heterocyclic compound represented by the following formula [I]
wherein each symbol is as defined in the specification, or a pharmaceutically acceptable a salt thereof, and a hepatitis C virus (HCV) polymerase inhibitor and a therapeutic agent for hepatitis C containing this compound. The compound of the present invention shows an anti-HCV activity based on the HCV polymerase inhibitory activity, and useful as an agent for the prophylaxis or treatment of hepatitis C.