Abstract: The invention relates to the use of compounds of formula (I) and isomers, salts, solvates, chemically protected forms, and prodrugs thereof, in the preparation of a medicament for inhibiting the activity of DNA-PK, wherein R1 and R2 are independently hydrogen, an optionally substituted C1-7 alkyl group, C3-20 heterocyclyl group, or C5-20 aryl group, or may together form, along with the nitrogen atom to which they are attached, an optionally substituted heterocyclic ring having from 4 to 8 ring atoms; X and Y are selected from CR4 and O, O and CR?4 and NR?4 and N, where the unsaturation is in the appropriate place in the ring, and where one of R3 and R4 or R?4 is an optionally substituted C3-20 heteroaryl or C5-20 aryl group, and the other of R3 and R4 or R?4 is H, or R3 and R4 or R?4 together are —A—B—, which collectively represent a fused optionally substituted aromatic ring. The compounds also selectively inhibit the activity of DNA-PK compared to PI 3-kinase and/or ATM.

Abstract: A compound of formula (I): for use in treating cancer or other diseases ameliorated by the inhibition of PARP, wherein: A and B together represent an optionally substituted, fused aromatic ring; X can be NRX or CRXRY; if X?NRX then n is 1 or 2 and if X?CRXRY then n is 1; RX is selected from the group consisting of H, optionally substituted C1-20 alkyl, C5-20 aryl, C3-20 heterocyclyl, amido, thioamido, ester, acyl, and sulfonyl groups; RY is selected from H, hydroxy, amino; or RX and RY may together form a spiro-C3-7 cycloalkyl or heterocyclyl group; RC1 and RC2 are independently selected from the group consisting of hydrogen and C1-4 alkyl, or when X is CRXRY, RC1, RC1, RC2, RX and RY, together with the carbon atoms to which they are attached, may form an optionally substituted fused aromatic ring; R1 is selected from H and halo; and Het is selected from: where Y1 is selected from CH and N, Y2 is selected from CH and N, Y3 is selected from CH, CF and N, where only one or two of Y1, Y2 and Y3 can be N;

Abstract: A compound of formula (I): for use in treating cancer or other diseases ameliorated by the inhibition of PARP, wherein: A and B together represent an optionally substituted, fused aromatic ring; X can be NRX or CRXRY; if X=NRX then n is 1 or 2 and if X=CRXRY then n is 1; RX is selected from the group consisting of H, optionally substituted C1-20 alkyl, C5-20 aryl, C3-20 heterocyclyl, amido, thioamido, ester, acyl, and sulfonyl groups; RY is selected from H, hydroxy, amino; or RX and RY may together form a spiro-C3-7 cycloalkyl or heterocyclyl group; RC1 and RC2 are independently selected from the group consisting of hydrogen and C1-4 alkyl, or when X is CRXRY, RC1, RC2, RX and RY, together with the carbon atoms to which they are attached, may form an optionally substituted fused aromatic ring; R1 is selected from H and halo; and Het is selected from: where Y1 is selected from CH and N, Y2 is selected from CH and N, Y3 is selected from CH, CF and N, where only one or two of Y1, Y2 and Y3 can be N; and

Abstract: The invention relates to the use of compounds of formula (I) and isomers, salts, solvates, chemically protected forms, and prodrugs thereof, in the preparation of a medicament for inhibiting the activity of DNA-PK, wherein R1 and R2 are independently hydrogen, an optionally substituted C1-7 alkyl group, C3-20 heterocyclyl group, or C5-20 aryl group, or may together form, along with the nitrogen atom to which they are attached, an optionally substituted heterocyclic ring having from 4 to 8 ring atoms; X and Y are selected from CR4 and O, O and CR?4 and NR?4 and N, where the unsaturation is in the appropriate place in the ring, and where one of R3 and R4 or R?4 is an optionally substituted C3-20 heteroaryl or C5-20 aryl group, and the other of R3 and R4 or R?4 is H, or R3 and R4 or R?4 together are -A-B—, which collectively represent a fused optionally substituted aromatic ring. The compounds also selectively inhibit the activity of DNA-PK compared to PI 3-kinase and/or ATM.

Abstract: A compound of formula (I): for use in treating cancer or other diseases ameliorated by the inhibition of PARP, wherein: A and B together represent an optionally substituted, fused aromatic ring; X can be NRX or CRXRY; if X=NRX then n is 1 or 2 and if X=CRXRY then n is 1; RX is selected from the group consisting of H, optionally substituted C1-20 alkyl, C5-20 aryl, C3-20 heterocyclyl, amido, thioamido, ester, acyl, and sulfonyl groups; RY is selected from H, hydroxy, amino; or RX and RY may together form a spiro-C3-7 cycloalkyl or heterocyclyl group; RC1 and RC2 are independently selected from the group consisting of hydrogen and C1-4 alkyl, or when X is CRXRY, RC1, RC2, RX and RY, together with the carbon atoms to which they are attached, may form an optionally substituted fused aromatic ring; R1 is selected from H and halo; and Het is selected from: where Y1 is selected from CH and N, Y2 is selected from CH and N, Y3 is selected from CH, CF and N, where only one or two of Y1, Y2 and Y3 can be N; and

Abstract: The invention relates to the use of compounds of formula (I) and isomers, salts, solvates, chemically protected forms, and prodrugs thereof, in the preparation of a medicament for inhibiting the activity of DNA-PK, wherein R1 and R2 are independently hydrogen, an optionally substituted C1-7 alkyl group, C3-20 heterocyclyl group, or C5-20 aryl group, or may together form, along with the nitrogen atom to which they are attached, an optionally substituted heterocyclic ring having from 4 to 8 ring atoms; X and Y are selected from CR4 and O, O and CR′4 and NR″4 and N, where the unsaturation is in the appropriate place in the ring, and where one of R3 and R4 or R′4 is an optionally substituted C3-20 heteroaryl or C5-20 aryl group, and the other of R3 and R4 or R′4 is H, or R3 and R4 or R″4 together are —A—B—, which collectively represent a fused optionally substituted aromatic ring.