Patent ID: 7893060

Claim:
A compound which is a thiazolopyrimidine of formula (I): wherein W represents a thiazole ring; R 1 and R 2 form, together with the N atom to which they are attached, a group of the following formula (IIa): in which A is selected from: (a) a 4- to 7-membered saturated N-containing heterocyclic ring which includes 0 or 1 additional heteroatoms selected from N, S and O, the ring being unsubstituted or substituted; (b) a 4- to 7-membered saturated N-containing heterocyclic ring which includes 0 or 1 additional heteroatoms selected from N, S and O, the ring being fused to a second ring selected from a 4- to 7-membered saturated N-containing heterocyclic ring as defined above, a 5- to 12-membered unsaturated heterocyclic ring, a 5- to 7-membered saturated O-containing heterocyclic ring, a 3- to 12-membered saturated carbocyclic ring and an unsaturated 5- to 12-membered carbocyclic ring to form a heteropolycyclic ring system, the heteropolycyclic ring system being unsubstituted or substituted; (c) a 4- to 7-membered saturated N-containing heterocyclic ring which includes 0 or 1 additional heteroatoms selected from N, S and O and which further comprises, linking two constituent atoms of the ring, a bridgehead group selected from —(CR′ 2 ) n — and —(CR′ 2 ) r —O—(CR′ 2 ) s — wherein each R′ is independently H or C 1 -C 6 alkyl, n is 1, 2 or 3, r is 0 or 1 and s is 0 or 1, the remaining ring positions being unsubstituted or substituted; and (d) a group of formula (IIb): wherein ring B is a 4- to 7-membered saturated N-containing heterocyclic ring which includes 0 or 1 additional heteroatoms selected from N, S and O and ring B′ is a 3- to 12-membered saturated carbocyclic ring, a 5- to 7-membered saturated O-containing heterocyclic ring or a 4- to 7-membered saturated N-containing heterocyclic ring as defined above, each of B and B′ being unsubstituted or substituted; or one of R 1 and R 2 is C 1 -C 6 alkyl and the other of R 1 and R 2 is selected from a 3- to 12-membered saturated carbocyclic group which is unsubstituted or substituted, a 5- to 12-membered unsaturated carbocyclic group which is unsubstituted or substituted, a 5- to 12-membered unsaturated heterocyclic group which is unsubstituted or substituted, a 4- to 12-membered saturated heterocyclic group which is unsubstituted or substituted and a C 1 -C 6 alkyl group which is substituted by a group selected from a 3- to 12-membered saturated carbocyclic group which is unsubstituted or substituted, a 5- to 12-membered unsaturated carbocyclic group which is unsubstituted or substituted, a 5- to 12-membered unsaturated heterocyclic group which is unsubstituted or substituted and a 4- to 12-membered saturated heterocyclic group which is unsubstituted or substituted; m is 0, 1 or 2; R 3 is H or C 1 -C 6 alkyl; and R 4 is an indole group which is unsubstituted or substituted; or a pharmaceutically acceptable salt thereof.