The present invention relates to a compound of Formula (I): wherein: n is 0 or 1; X is O or CH
2
; R
1
is H or C
1-2
alkyl; R
2
is H or C
1-3
alkyl; R
3
and R
4
are each independently H or C
1-2
alkyl, where the alkyl may be substituted with one to three of the same or different substituents selected from R
10
R
5
is H or OCH
3
; R
10
is F or Cl; or a pharmaceutically acceptable salt or ester thereof.
本发明涉及一种公式(I)的化合物:其中:n为0或1;X为O或
CH2;R1为H或C1-2烷基;R2为H或C1-3烷基;R3和R4均独立地为H或C1-2烷基,其中烷基可以被一个到三个相同或不同的取代基R10取代;R5为H或OCH3;R10为F或Cl;或其药学上可接受的盐或
酯。