[EN] A PROCESS FOR PRODUCING 3,4-DIHYDRO NAPHTHYRIDINONE ANALOGS<br/>[FR] PROCEDE RELATIF A L'ELABORATION D'ANALOGUES DE 3,4-DIHYDRO NAPHTHYRIDINONE
申请人:BAYER AG
公开号:WO2002024693A1
公开(公告)日:2002-03-28
This invention is to provide a process for producing 3,4-dihydro naphthyridinone analogs and salts thereof containing the structure shown by the following structural formula (I).The naphthyridinone analogs with an electrowithdrawing group in 3-position are easily converted to corresponding 3,4-dihydro naphthyridinone analogs in the presence of reductant, e.g. sodium borohydride and lithium borohydride. The reduction can be performed in mild condition, and the intermediate naphthyridinone analogs containing the structure shown by the following structural formula (II) can be prepared easily under mild condition too, so various substituent can be introduced to the 3,4-dihydro naphthyridinone analogs.