Cytotoxic imidazo[1,2-a]pyridine compounds and their use in therapy

A compound of formula (I):

• wherein:
• R1 is a group of formula O-L-A;
• L is —(CH R12)m—;
• each R12 is H;
• m is 2;
• A is:
• v is 0;
• R9c is methyl, iso-propyl or tert-butyl;
• R9d is H or methyl;
• R10 is methyl;
• R11 is methyl;
• s is 1 or 2;
• each R2 is independently F, Cl, or Br;
• Y is CH;
• R3 is H;
• R4 is H;
• R5 is H or C1-4alkyl;
• R6 is H or C1-4alkyl;
• q is 0;
• or a salt and/or solvate thereof.