abstract |
The present invention provides a compound selected from the group consisting of: n n n n n n n n n n n n where n, m, X 1 , X 2 , X 3 , X 4 , R 1 , R 2 , R 3 , R 11 , R 12 , Y 1 , Y 2 , Y 3 , Y 4 , and Y 5 are those defined herein. Some aspects of the invention also provides methods for using these compounds and compositions comprising the same. |