abstract |
The present invention relates to general formula (I) wherein X 1 is N or N + O − , and one of X 2 , X 3 and X 4 is N or N + O − , X 2 , X 3 and X 4 are C. R 2 , R 3 , R 4 , R 5 , R 6 , A, B, and Y are as described herein. )). In addition, compositions and methods of use of the compounds represented by formula (I) are further described herein. |