Transition-Metal-Free Alkynylation of Aryl Chlorides
摘要:
Two sets of conditions have been developed for a base-mediated, transition-metal-free alkynylation of aryl chlorides that proceeds via benzyne intermediates. The first set of conditions Involves the use of TMPLI base in a pentane/THF mixture at 25 degrees C. The second set Involves use of a metal alkoxide base in dioxane at elevated temperature. Reasonable functional group tolerance has been observed. Fluoro, trifluoromethyl, silyl, cyano, and alcohol functionalities are compatible with the reaction conditions.
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.
Cleavage of Carbon–Carbon Triple Bond: Direct Transformation of Alkynes to Nitriles
作者:Noriko Okamoto、Minoru Ishikura、Reiko Yanada
DOI:10.1021/ol401311h
日期:2013.6.7
A new cleavage reaction of carbon–carbon triple bonds proceeds efficiently with NIS and TMSN3, giving the corresponding nitriles in moderate to good yields.
NIS和TMSN 3可以有效地进行碳-碳三键的新裂解反应,从而以中等至良好的产率获得相应的腈。
Copper-catalyzed cross-coupling of aryl iodides and aryl acetylenes using microwave heating
作者:Huan He、Yong-Jin Wu
DOI:10.1016/j.tetlet.2004.02.124
日期:2004.4
An efficient copper-catalyzedcross-coupling of aryliodides with aryl acetylenes under microwave irradiation is described. The reaction proceeds under microwave heating with 10 mol % CuI and 2 equiv Cs2CO3 in 43–87% yields.
描述了在微波辐射下芳基碘化物与芳基乙炔的有效铜催化交叉偶联。反应在微波加热下以10mol%的CuI和2当量的Cs 2 CO 3进行,产率为43-87%。
2,2′-Diamino-6,6′-dimethylbiphenyl as an Efficient Ligand in the CuI-Catalyzed Sonogashira Reaction of Aryl Iodides and Bromides with Terminal Alkynes
2,2′-Diamino-6,6′-dimethylbiphenyl (L1) was found to be a good ligand in the CuI-catalyzed Sonogashira coupling reaction of various aryl iodides and bromides with terminal alkynes. Under suitable conditions, all reactions gave the desired coupling products in moderate to excellent yields.
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.