| abstract |
The present invention relates to a compound of Formula (I): wherein: 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, hydroxy, C 1-2 alkyl, or OCH 3 ; and R 10 is F or Cl, or a pharmaceutically acceptable salt or ester thereof. |