申请人:——
公开号:US20030166936A1
公开(公告)日:2003-09-04
The present invention provides a process for preparing quinolonecarboxylic acid derivatives having the formula (I):
1
wherein R
1
is H, halogen, or amino; R
2
is halogen; R
3
is H, halogen, C
1-4
alkoxyl, or CN; R
4
is selected from the group consisting of C
3-6
cycloalkyl, C
1-4
alkyl, C
1-4
alkoxyC
1-4
alkyl, and C
1-4
alkylaminoC
1-4
alkyl. The invention also provides new acetophenones having the formula (II) that are intermediates for preparing the compound of the formula (I).
本发明提供了一种制备具有以下式(I)的喹诺酮羧酸衍生物的方法:
其中R1为H、卤素或氨基;R2为卤素;R3为H、卤素、C1-4烷氧基或CN;R4选自C3-6环烷基、C1-4烷基、C1-4烷氧基C1-4烷基和C1-4烷基氨基C1-4烷基的群组。该发明还提供了新的具有以下式(II)的苯乙酮,这些苯乙酮是制备上述式(I)化合物的中间体。