申请人:Cleary Thomas
公开号:US20080312467A1
公开(公告)日:2008-12-18
The present invention provides a novel method for preparing a key intermediate, 3-amino-pentan-1,5-diol (2), which is useful for the preparation of 6-(2,4-difluorophenoxy)-2-[3-hydroxy-1-(2-hydroxyethyl)-propylamino]-8-methyl-8H-pyrido[2,3-d]pyrimidine-7-one (1) a MAP-kinase inhibitor useful in the treatment of rheumatoid arthritis.
本发明提供了一种新的制备关键中间体3-氨基戊-1,5-二醇(2)的方法,该中间体可用于制备6-(2,4-二氟苯氧基)-2- [3-羟基-1-(2-羟乙基)-丙基氨基] -8-甲基-8H-吡啶[2,3-d]嘧啶-7-酮(1),该MAP-激酶抑制剂可用于治疗类风湿性关节炎。