使用温和的环脱水/芳香化反应,通过使用三氟甲磺酸酐(Tf 2 O)和2-甲氧基吡啶(2-MeOPyr)引发,可以中等至极好的收率合成咪唑并[1,5- a ]嗪。发现各种取代模式和官能团在优化条件下是相容的。此外,还显示了5-溴-3-芳基衍生物在Sonogashira交叉偶联和直接芳基化反应中具有活性。叔酰胺与底物相容,可合成三氟甲磺酸咪唑并[1,5- a ]吡啶鎓。
使用温和的环脱水/芳香化反应,通过使用三氟甲磺酸酐(Tf 2 O)和2-甲氧基吡啶(2-MeOPyr)引发,可以中等至极好的收率合成咪唑并[1,5- a ]嗪。发现各种取代模式和官能团在优化条件下是相容的。此外,还显示了5-溴-3-芳基衍生物在Sonogashira交叉偶联和直接芳基化反应中具有活性。叔酰胺与底物相容,可合成三氟甲磺酸咪唑并[1,5- a ]吡啶鎓。
[EN] N-SUBSTITUTED-SULFAMOYLBENZOIC ACID DERIVATIVES, METHOD FOR PREPARING THEREOF AND ANTIVIRAL PHARMACEUTICAL COMPOSITION COMPRISING THE SAME<br/>[FR] DERIVES D'ACIDE SULFAMOYLBENZOIQUE N-SUBSTITUE, LEUR PROCEDE DE PREPARATION ET COMPOSITION PHARMACEUTIQUE ANTIVIRALE LES CONTENANT
申请人:B & C BIOPHARM CO LTD
公开号:WO2006011719A1
公开(公告)日:2006-02-02
The present invention relates to N-substituted-sulfamoylbenzoic acid derivatives useful as an antiviral agent, and more particularly the present invention relates to novel N-substituted-sulfamoylbenzoic acid derivatives having an excellent inhibitory effect on replication of Hepatitis C virus (HCV) and pharmaceutically acceptable salts thereof, a preparation method thereof, and an antiviral pharmaceutical composition comprising the compound as an effective component. The N-substituted-sulfamoylbenzoic acid derivatives according to the present invention have an excellent inhibitory effect on replication of Hepatitis C virus (HCV) and thus can be advantageously used as a therapeutic or prophylactic agent of hepatitis C.
Compounds of the formula I:
or a pharmaceutically acceptable salt thereof, wherein, R1 is optionally substituted tetrazolyl, R2 is optionally substituted phenyl, optionally substituted pyridinyl or optionally substituted thienyl, and R3, R4, R5 and R6 are as defined herein. Also provided are methods of using the compounds for treating diseases mediated by a P2X3 and/or a P2X2/3 receptor antagonist and methods of making the compounds.
Triflic Anhydride Mediated Synthesis of Imidazo[1,5-<i>a</i>]azines
作者:Guillaume Pelletier、André B. Charette
DOI:10.1021/ol400870b
日期:2013.5.3
Imidazo[1,5-a]azines are synthesized in moderate to excellent yields using a mild cyclodehydration/aromatization reaction triggered by the use of triflic anhydride (Tf2O) and 2-methoxypyridine (2-MeOPyr). Various substitution patterns and functional groups were found to be compatible under the optimized conditions. In addition, a 5-bromo-3-aryl derivative was also shown to be active in a Sonogashira
使用温和的环脱水/芳香化反应,通过使用三氟甲磺酸酐(Tf 2 O)和2-甲氧基吡啶(2-MeOPyr)引发,可以中等至极好的收率合成咪唑并[1,5- a ]嗪。发现各种取代模式和官能团在优化条件下是相容的。此外,还显示了5-溴-3-芳基衍生物在Sonogashira交叉偶联和直接芳基化反应中具有活性。叔酰胺与底物相容,可合成三氟甲磺酸咪唑并[1,5- a ]吡啶鎓。