METHOD FOR PRODUCING SUBSTITUTED POLYCYCLIC PYRIDONE DERIVATIVE AND CRYSTAL OF SAME
申请人:Shionogi & Co., Ltd.
公开号:EP3473629A1
公开(公告)日:2019-04-24
The present invention provides a process for preparing a compound of the formula (II):
wherein R2 is unsubstituted alkyl,
characterized by reacting a compound of the formula (I):
wherein R1 is hydrogen or a protecting group other than unsubstituted alkyl,
with a compound of the formula: R2-OH, wherein R2 is as defined above, in the presence of a sodium salt and/or a magnesium salt.
本发明提供了一种制备式 (II) 化合物的工艺:
其中 R2 是未取代的烷基、
其特征在于使式(I)化合物反应:
其中 R1 是氢或未取代烷基以外的保护基团、
与式(I)化合物反应R2-OH,其中 R2 如上定义,在钠盐和/或镁盐存在下反应。