Macrocyclic hepatitis C serine protease inhibitors
申请人:Miao Zhenwei
公开号:US20050153877A1
公开(公告)日:2005-07-14
The present invention relates to compounds of Formula I, II or Ill, or a pharmaceutically acceptable salt, ester, or prodrug, thereof:
wherein W is a substituted or unsubstituted heterocyclic ring system. The compounds inhibit serine protease activity, particularly the activity of hepatitis c virus (HCV) NS3-NS4A protease. Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis c virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
Sonogashira Cross-Coupling of Aryltrimethylammonium Salts
作者:Qianwei Chen、Fengchen Gao、Huiling Tang、Miao Yao、Qian Zhao、Yanhui Shi、Yanfeng Dang、Changsheng Cao
DOI:10.1021/acscatal.9b00218
日期:2019.4.5
Sonogashira coupling reaction involving C–N bond cleavage with aryltrimethylammonium triflate as an electrophilic coupling partner is described in this work. The reactions proceeded well undermildconditions with a stoichiometric ratio of alkyl, aryl, or heteroaryl acetylenes and provided yields of up to 93%. Numerous useful functional groups were tolerated under the reaction conditions. Direct amine
The catalytic Sonogashira couplingreaction of terminal alkynes and aryl halides is developed using copper(II) oxide nanoparticles as catalyst in dimethyl sulfoxide. The procedure is experimentally simple, general, efficient, and free from addition of external cocatalysts or chelating ligands. copper(II) oxide nanoparticles - Sonogashira coupling - ligand-free - nano catalyst
A new and recyclable protocol was developed for Pd(OAc)2-catalyzed the cross-coupling reaction of terminal alkynes with arylboronicacids using environmentally friendly H2O/TBAB as reaction medium. A series of cross-coupling products containing internal acetylenic bond can be obtained with good selectivity and yield. The Pd(OAc)2/H2O/TBAB system was stable in the Sonogashira-type cross-coupling reaction
开发了一种新的可回收的Pd(OAc)2协议,使用环境友好的H 2 O / TBAB作为反应介质,催化末端炔烃与芳基硼酸的交叉偶联反应。可以获得具有良好选择性和产率的一系列包含内部炔键的交叉偶联产物。Pd(OAc)2 / H 2 O / TBAB体系在Sonogashira型交叉偶联反应中稳定,可以使用至少三个循环,而催化性能却没有显着下降。结果表明,在合成有机化学中,不受支持和可循环使用的系统可以扩展到C C键形成的其他领域。
MACROCYCLIC HEPATITIS C SERINE PROTEASE INHIBITORS
申请人:Miao Zhenwei
公开号:US20090304629A1
公开(公告)日:2009-12-10
The present invention relates to compounds of Formula I, II or III, or a pharmaceutically acceptable salt, ester, or prodrug, thereof:
wherein W is a substituted or unsubstituted heterocyclic ring system. The compounds inhibit serine protease activity, particularly the activity of hepatitis c virus (HCV) NS3-NS4A protease. Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis c virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.