AbstractAn original and convenient domino route to natural nostoclides I and II has been developed using a two‐step sequence consisting of a copper‐catalyzed tandem reaction associated with Suzuki cross‐coupling. The methodology employed for this total synthesis appeared to be an interesting and sufficiently flexible tool to allow the synthesis of numerous analogues of these nostoclides.magnified image
Changes of pH in living organisms are closely related to various physiological functions, so fluorescentsensors of pH would be useful as experimental tools and possibly also for medical diagnosis. We previously reported a pHsensor with ‘OFF-ON-OFF’ -type fluorescence change, which would be potentially more useful than conventional sensors with ‘OFF-ON’ type change. It can be utilized as a sensor for a
[EN] MACROCYCLIC HEPATITIS C SERINE PROTEASE INHIBITORS<br/>[FR] INHIBITEURS MACROCYCLIQUES DE LA SERINE PROTEASE DE L'HEPATITE C
申请人:ENANTA PHARM INC
公开号:WO2004072243A2
公开(公告)日:2004-08-26
The present invention relates to compounds of Formula (I, II or III), or a pharmaceutically acceptable salt, ester, or prodrug, thereof: (I), (II), (III), 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.