[EN] PROCESS FOR MAKING ISOQUINOLINE COMPOUNDS<br/>[FR] PROCÉDÉ DE FABRICATION DE COMPOSÉS ISOQUINOLÉINE
申请人:FIBROGEN INC
公开号:WO2014014834A1
公开(公告)日:2014-01-23
The present invention relates to methods for making isoquinoline compounds and the intermediate compounds achieved thereby. Such compounds can be used to prepare compounds and compositions capable of decreasing HIF hydroxylase enzyme activity, thereby increasing the stability and/or activity of hypoxia inducible factor (HIF).
[EN] CASPASE INHIBITOR COMPRISING 2-ALKYL-4-OXOBUTANOYL GROUP AND PHARMACEUTICAL COMPOSITION THEREOF<br/>[FR] INHIBITEUR DES CASPASES COMPRENANT UN GROUPE 2-ALKYL-4-OXOBUTANOYLE ET COMPOSITION PHARMACEUTIQUE CONTENANT CELUI-CI
申请人:LG LIFE SCIENCES LTD
公开号:WO2005035497A1
公开(公告)日:2005-04-21
The present invention relates to a compound of the formula (1), pharmaceutically acceptable salt, physiologically hydrolysable ester, hydrate, solvate, or steroisomer thereof having inhibitory activity against caspases. The compound contains unknown new 2-alkyl-4-oxobutanoyl group. Further, the present invention relates to a process for preparing the compound of formula 1 and a method for determining its binding ability for caspases. The compound of formula 1 can be used effectively for the treatment or relief of various diseases caused by caspases.
The invention relates to a new method for preparing (R)-praziquantel. In the invention, by taking advantage of the high stereo selectivity, site selectivity and region selectivity of an enzyme, an intermediate of a pure optical and chiral (R)-praziquantel are obtained by means of the dynamic kinetic resolution of an enantiomer from the synthesized racemate or derivatives thereof, and the (R)-praziquantel is obtained by using various conventional and mature organic chemical reactions with higher yield. The method of the invention has the potential advantages of easily available raw materials, low cost, environmentally safer process and convenience for large-scale production. Also, the purity of the end product can be more than 98%. By adopting the invention, the quality of the product is improved and a basis for developing high quality of active pharmaceutical ingredients and formulations is established, and thus the pending industrial problem of purifying praziquantel over 30 years becomes solvable.