abstract |
The present invention is directed to compounds of Formula I: n n n n n n n n n n n n and pharmaceutically acceptable salts, prodrugs, solvates, hydrates, tautomers, or isomers or thereof, wherein R 1 , R 2 , R 2 ′, L, X, W, Y 1 , Y 2 , Y 3 , and Y 4 are described herein. |