A compound selected from the group consisting of a compound of formula I
1
a compound of formula II
2
and when the compound of formula I and II comprises an amino group pharmaceutically acceptable ammonium salts thereof, wherein R
1
, R
2
, Cx, n, R
3
, R
4
, R
5
, Y are as defined in the specification.
从以下组中选择的化合物,其中化合物I的化合物,化合物II的化合物,以及当化合物I和II的化合物包括其
氨基团的药用可接受
铵盐,其中R1、R2、Cx、n、R3、R4、R5、Y的定义如规范中所述。