abstract |
The present invention provides a compound of the formula: or a pharmaceutical salt thereof, a method for the treatment of diabetes, an intermediate and a method for preparing the compound of the present invention: Wherein R 1 is selected from the group consisting of H and CH 3 ; R 2 is selected from the group consisting of H and CH 3 ; R 3 is selected from the group consisting of H, C 1 -C 3 alkyl, O (CH 2 ) 3 SO 2 CH 3 , O (CH 2 ) 2 OCH 3 , O (CH 2 ) 2 C (CH 3 ) 2 OH, CN and OCF 2 . |