The present disclosure provides compounds represented by Formula (I): Formula (I) and the pharmaceutically acceptable salts and solvates thereof, wherein R1, R2a, R2b, R3a, R3b, R4, Y, ═, Ar, W, L, and B are as defined as set forth in the specification. The present disclosure also provides compounds of Formula (I)I for use to treat a condition or disorder responsive to inhibition and/or degradation of BET bromodomains such as cancer.