Compounds

A compound of formula (I):

• or a pharmaceutically acceptable salt or solvate thereof, wherein:
• Q is selected from O or S;
• R1 is a 4- to 10-membered cyclic group, wherein the cyclic group may optionally be substituted with one, two or three substituents independently selected from —NO2, —OH, —ORβ, —SH, —SRβ, —SORβ, —SO2H, —SO2NH2, —SO2NHRβ, —SO2N(Rβ)2, —Rα—SH, —Rα—SRβ, —Rα—SORβ, —Rα—SO2H, —Rα—SO2Rβ, —Rα—SO2NH2, —Rα—SO2NHRβ, —Rα—SO2N(Rβ)2, —NH2, —NHRβ, —N(Rβ)2, —Rα—NH2, —Rα—NHRβ, —CHO, —CORβ, —COOH, —COORβ, —OCORβ, —Rα—CHO, —Rα—CORβ, —Rα—COOH, —Rα—COORβ, —Rα—OCORβ, C2-C6 alkenyl or C2-C6 alkynyl;
• wherein the C2-C6 alkenyl or C2-C6 alkynyl may optionally be substituted with one or more C1-C4 alkyl, C1-C4 haloalkyl, C3-C7 cycloalkyl, —O(C1-C4 alkyl), —O(C1-C4 haloalkyl), —O(C3-C7 cycloalkyl), halo, —OH, —NH2, —CN, —C≡CH, oxo (═O), or 4- to 6-membered heterocyclic group;
• each —Rα— is independently selected from an alkylene, alkenylene or alkynylene group, wherein the alkylene, alkenylene or alkynylene group contains from 1 to 6 atoms in its backbone, wherein one or more carbon atoms in the backbone of the alkylene, alkenylene or alkynylene group may optionally be replaced by one or more heteroatoms N, O or S, and wherein the alkylene, alkenylene or alkynylene group may optionally be substituted with one or more halo and/or —Rβ groups;
• each —Rβ is independently selected from a C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl or C2-C6 cyclic group, and wherein any —Rβ may optionally be substituted with one or more C1-C4 alkyl, C1-C4 haloalkyl, C3-C7 cycloalkyl, —O(C1-C4 alkyl), —O(C1-C4 haloalkyl), —O(C3-C7 cycloalkyl), halo, —OH, —NH2, —CN, —C≡CH, oxo (═O), or 4- to 6-membered heterocyclic group;
• and
• R2 is a cyclic group substituted at the α-position, wherein R2 may optionally be further substituted.