| abstract |
According to the invention there is provided a compound of formula (I) wherein: A represents C(═N—W-D) or S; B represents S or C(—NH—W-D); when: A represents C(═N—W-D) and B represents S then the bond between B and the NH atom is a single bond; or A represents S and B represents C(—NH—W-D) then the bond between B and the NH atom is a double bond; X represents -Q-[CR x R y ] n —; W represents —[CR x R y ] m — or —C(O)—[CR x R y ] p —; Q represents a bond, —N(R a )—; —S—, or —O—; A 1 to A 5 respectively represent C(R 1 ), C(R 2 ), C(R 3 ), C(R 4 ) and C(R 5 ), or, alternatively, up to two of A 1 to A 5 may independently represent N; D represents phenyl, pyridyl or pyrimidinyl optionally substituted by one or more R 6 groups, which compounds are useful in the treatment of cancer. |