The invention relates to a method of preparation of fluoroquinolones of formula (I) from compounds of formula (II):
in which R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, and X are as defined in Claim
1.
该发明涉及一种从化合物(II)制备化合物(I)的
氟喹诺酮的方法:其中R1、R2、R3、R4、R5、R6、R7和X的定义如权利要求1中所述。