Abstract: Compounds of formula (I) are inhibitors of histone deacetylase activity, and are useful in the treatment of, for example, cancers:

Abstract: Compounds of formula (I) are inhibitors of histone deacetylase activity, and are useful in the treatment of, for example, cancers:

Abstract: Compounds of formula (I) are inhibitors of histone deacetylase activity, and are useful in the treatment of, for example, cancers.

Abstract: Compounds of formula (I) are inhibitors of Polo-like kinases (PLKs), and are useful, inter alia, in the treatment of proliferative diseases: wherein R1 is hydrogen, or a (C1-C6)alkyl, (C2-C6)alkenyl, (C2-C6)alkynyl or (C3-C6)cycloalkyl group; R2 is hydrogen, or an optionally substituted (C1-C6)alkyl, (C2-C6)alkenyl, (C2-C6)alkynyl or (C3-C6)cycloalkyl group; R3 and R3? are independently selected from hydrogen, —CN, hydroxyl, halogen, optionally substituted (C1-C6)alkyl, (C2-C6)alkenyl, (C2-C6)alkynyl or (C3-C6)cycloalkyl, —NR6R7 or C1-C4 alkoxy, wherein R6 and R7 are independently hydrogen or optionally substituted (C1-C6)alkyl; ring A is an optionally substituted mono- or bi-cyclic carbocyclic or heterocyclic ring or ring system having up to 12 ring atoms; T is a radical of formula (II) R4R5CH—NH—Y-L1-X1—??(II) Wherein R4 is a carboxylic acid group (—COOH), or an ester group which is hydrolysable by one or more intracellular esterase enzymes to a carboxylic acid group; R5 is the side chain of a natura

Abstract: Compounds of formula (I) are inhibitors of histone deacetylase activity, and are useful in the treatment of, for example, cancers, wherein R1 is a carboxylic acid group (—COOH), or an ester group which is hydrolysable by one or more intracellular carboxyesterase enzymes to a carboxylic acid group; R2 is the side chain of a natural or non-natural alpha amino acid; Y is a bond, C(?O)—, —S(?O)2—, —C(—O)O—, —C(O)NR3—, —C(?S)—NR3, —C(?NH)NR3 or —S(?O)2NR3— wherein R3 is hydrogen or optionally substituted C1-C6 alkyl; L is a divalent radical of formula -(Alk1)m(O)n(Alk2)p— wherein m, n and p are independently 0 or 1, Q is (i) an optionally substituted divalent mono- or bicyclic carbocyclic or heterocyclic radical having 5-13 ring members, or (ii), in the case where both m and p are 0, a divalent radical of formula —X2-Q1- or -Q1-X2— wherein X2 is —O—, S— or NRA— wherein RA is hydrogen or optionally substituted C1-C3 alkyl, and Q1 is an optionally substituted divalent mono- or bicyclic carbocyclic or hetero-cyclic r

Abstract: Pyrimidines of formla (1) are described: wherein R1 is a —XR6 group; R2 and R3 which may be the same or different is each a hydrogen or halogen atom or a group selected from an optionally substituted aliphatic, cycloaliphatic, heteroaliphatic, heterocycloaliphatic, —OH, —OR10 [where R10 is an optionally substituted aliphatic, cycloaliphatic, heteroaliphatic, heterocycloaliphatic, aromatic or heteroaromatic group) —SH, —NO2, —CN, —SR10, —COR10, S(O)R10, —SO2R8, —SO2N(R8)(R9), —CO2R8, —CON(R8)(R9), —CSN(R8)(R9), —NH2 or substituted amino group; R4 is a X1R11 group where X1 is a covalent bond or a —C(R12)(R13)— [where each of R12 and R13 is a hydrogen or halogen atom or a hydroxyl, alkyl or haloalkyl group] or —C(O)— group and R11 is an optionally substituted phenyl, thienyl, thiazolyl or indolyl group; R5 is a halogen atom or an alkynyl group; and the salts, solvates, hydrates and N-oxides thereof.