The present invention relates to a method for preparing amicarbazone by using amino-triazolinone, which is an intermediate compound, and relates to a method for preparing amicarbazone, comprising the steps of: obtaining hydrazine carboxylic acid represented by 5 chemical formula (V) by reacting acylhydrazide represented by chemical formula (II) and a carbamating agent represented by chemical formula (III) or (IV); reacting the obtained hydrazine carboxylic acid represented by chemical formula (V) and hydrazine hydrate in the presence of a base catalyst; and reacting the obtained compound represented by chemical formula (I) 10 and an alkyl isocyanate represented by chemical formula (IV) in the presence of a base catalyst. Amino-triazolinone and amicarbazone would be stably produced by the present invention without safety gear and safety facilities for the leakage of phosgene, which has been conventionally used as a reactant.
[EN] INHIBITORS OF SERINE PROTEASES<br/>[FR] INHIBITEURS DE SÉRINE PROTÉASES
申请人:VERTEX PHARMA
公开号:WO2008106058A2
公开(公告)日:2008-09-04
[EN] The present invention relates to compounds that inhibit serine protease activity, particularly the activity of hepatitis C virus NS3-NS4A protease. As such, they act by interfering with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The invention further relates to compositions comprising these compounds either for ex vivo use or for administration to a patient suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a patient by administering a composition comprising a compound of this invention. [FR] L'invention concerne des composés qui inhibent une activité de sérine protéase, en particulier l'activité de la NS3-NS4A protéase du virus de l'hépatite C. En tant que tels, ils agissent en interférant avec le cycle de vie du virus de l'hépatite C et sont également utiles en tant qu'agents antiviraux. L'invention concerne en outre des compositions comprenant ces composés pour une utilisation ex vivo ou pour une administration à un patient souffrant d'une infection VHC. L'invention concerne également des procédés de traitement d'une infection VHC chez un patient par administration d'une composition comprenant un composé de cette invention.