申请人:MEIJI SEIKA PHARMA CO., LTD.
公开号:US10000492B2
公开(公告)日:2018-06-19
A process for producing a compound represented by a Formula (III), including reacting a compound of the following formula
with a compound selected from the group consisting of 1-hydroxypyrrolidine-2,5-dione, 2-hydroxy-3a,4,7,7a-tetrahydro-1H-isoindol-1,3(2H)-dione, 2-hydroxyhexahydro-1H-isoindol-1,3(2H)-dione and 4-hydroxy-4-azatricyclo[5.2.1.02,6]dec-8-ene-3,5-dione, carrying out a carbonylation to obtain a compound of the following formula
removing the NH protecting group P and treating the resultant compound with a base to produce a compound represented by the following formula
wherein OBn is benzyloxy and R2 is hydrogen, ClCO— or Cl3COCO—.
一种生产由式(III)代表的化合物的工艺,包括使下式化合物发生反应
与选自由 1-羟基吡咯烷-2,5-二酮、2-羟基-3a,4,7,7a-四氢-1H-异吲哚-1,3(2H)-二酮、2-羟基六氢-1H-异吲哚-1,3(2H)-二酮和 4-羟基-4-氮杂三环[5.2.1.02,6]癸-8-烯-3,5-二酮,进行羰基化反应,得到下式化合物
去除 NH 保护基 P,并用碱处理所得化合物,生成下式所示的化合物
其中 OBn 为苄氧基,R2 为氢、ClCO- 或 Cl3COCO-。