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.
reactions of dibromoalkenes with arylboronic acids using a hydrazone–Cu catalyst system proceeded smoothly under mild conditions to afford the corresponding internal alkyne derivatives in good yields. Furthermore, we also succeeded in the synthesis of o-allyloxy(ethynyl)benzene derivatives, which are known to be effective precursors of various heterocyclic compounds, through this reaction.
Rhodium-catalyzed carbonylative synthesis of silyl-substituted indenones
作者:Fengxiang Zhu、Anke Spannenberg、Xiao-Feng Wu
DOI:10.1039/c7cc08210j
日期:——
A novel and efficient rhodium-catalyzed procedure for the preparation of silyl-substituted indenones has been developed. Using silanes and internal alkynes as the substrates, in the presence of CO, good to excellent yields of the desired indenones were isolated. A wide range of functional groups, encompassing esters, amines, nitriles and halides, is compatible in this system.
A convenient catalystsystem consisting of Pd(OAc)2, PPh3, K3PO4 and DMSO was found to be effective for the coupling reaction of aryl halides with terminal alkynes as well as the deacetonative coupling reaction using a 4-aryl-2-methylbut-3-yn-2-ol as a terminal alkyne precursor. An iminophosphine as a ligand worked more effectively for some combination of substrates than triphenylphosphine.
已发现由Pd(OAc)2,PPh 3,K 3 PO 4和DMSO组成的便捷催化剂体系对于芳基卤化物与末端炔烃的偶合反应以及使用4-芳基-2的脱丙酮偶合反应是有效的-甲基丁-3-yn-2-ol作为末端炔烃前体。亚氨基膦作为配体比三苯基膦更有效地用于某些底物组合。
Facile synthesis of acetylene-substituted terthiophenes
作者:Pawel Wagner、Ashton C. Partridge、Kenneth W. Jolley、David L. Officer
DOI:10.1016/j.tetlet.2007.07.032
日期:2007.9
A modified Horner–Emmons condensation reaction has been employed for the synthesis of acetylene-substituted terthiophenes in excellent yields. Conjugating 3′-aryl substituents to terthiophene using an ethyne rather than an ethene linker results in enhanced planarity of the resulting molecule as established by X-ray structural analysis of (2,2′:5′,2″-terthiophen-3′-yl)-4‴-pyridylethyne.