Bis-(aryl/heteroaryl)-methylene compounds, pharmaceutical compositions containing same and their use for treating cancer

A compounds of formula

• or a pharmaceutically acceptable salt thereof, wherein
• the dotted line is an optional double bond;
• A and B are each independently an aryl;
• R1 is hydrogen, an alkyl or cycloalkyl;
• R2 is absent when the dotted line is a double bond or R2 is hydrogen, an alkyl or cycloalkyl when the dotted line is absent;
• W is OH when the dotted line is absent or W is O when the dotted line is a double bond;
• X is O, CH2, CHR7 or CR7R7, where R7 is in an alkyl or fluoroalkyl;
• Y is NR10(CO), (CO)NR10, O, CH2, CHR7 or CR7R7, where R7 is in an alkyl or fluoroalkyl and R10 is H or an alkyl;
• R3 and R4 are each independently hydrogen, an alkyl or fluoroalkyl;
• R5 and R6 are each independently an optional substituent;
• when p is greater than 0, R″ is H and one of said R″ is optionally OH;
• n and p are each an integer from 0 to 6.