THE INVENTION GENERALLY RELATES TO SUBSTITUTED BENZOFURANYL AND SUBSTITUTED BENZOXAZOLYL COMPOUNDS AND MORE PARTICULARLY TO A COMPOUND REPRESENTED BY STRUCTURAL FORMULA (A) : OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF WHEREIN THE VARIABLES ARE AS DEFINED AND DESCRIBED HEREIN. THE INVENTION ALSO INCLUDES THE SYNTHESIS AND USE OF A COMPOUND OF STRUCTURAL FORMULA (A) OR A PHARMACEUTICALLY ACCEPTABLE SALT OR COMPOSITION THEREOF IN THE TREATMENT OF CANCER ( MANTLE CELL LYMPHOMA) AND OTHER DISEASES AND DISORDERS.