申请人:H. Lundbeck A/S
公开号:US10626123B2
公开(公告)日:2020-04-21
The present invention relates to a process for synthesis of 4,5,6,7-tetrahydroisoxazolo[5,4-c]pyridin-3-ol abbreviated THIP, having the INN name gaboxadol, starting from pyrrolidin-2-one. The process comprises a new direct process to obtain the intermediate dimethyl 5-hydroxy-3,6-dihydropyridine-1,4(2H)-5 dicarboxylate or the intermediate diethyl 5-hydroxy-3,6-dihydropyridine-1,4(2H)-dicarboxylate.
本发明涉及一种从吡咯烷-2-酮开始合成 4,5,6,7-四氢异恶唑并[5,4-c]吡啶-3-醇的工艺,缩写为 THIP,其 INN 名称为 gaboxadol。该工艺包括一种新的直接获得中间体 5-羟基-3,6-二氢吡啶-1,4(2H)-5 二甲酸二甲酯或中间体 5-羟基-3,6-二氢吡啶-1,4(2H)-二甲酸二乙酯的工艺。