Abstract: A compound of formula I, or a pharmaceutically acceptable salt or ester thereof, wherein R1 is selected from: aryl; heteroaryl; —NHR3; fused aryl-C4-7-heterocycloalkyl; —CONR4R5; —NHCOR6; —C3-7-cycloalkyl; —O—C3-7-cycloalkyl; —NR3R6; and optionally substituted —C1-6 alkyl; wherein said aryl, heteroaryl, fused aryl-C4-7-heterocycloalkyl and C4-7-heterocycloalkyl are each optionally substituted; R2 is selected from hydrogen, aryl, C1-6-alkyl, C2-6-alkenyl, C3-7-cycloalkyl, heteroaryl, C4-7 heterocycloalkyl and halogen, wherein said C1-6-alkyl, C2-6-alkenyl, aryl, heteroaryl and C4-7-heterocycloalkyl are each optionally substituted; R3 is selected from aryl, heteroaryl, C4-7-heterocycloalkyl, C3-7-cycloalkyl, fused aryl-C4-7-heterocycloalkyl and C1-6-alkyl, each of which is optionally substituted; R4 and R5 are each independently hydrogen, or optionally substituted C3-7-cycloalkyl, aryl, heteroaryl, C1-6-alkyl or C3-6-heterocycloalkyl; or R4 and R5 together with the N to which they are attached form a C3-6-h

Abstract: A compound of formula I, or a pharmaceutically acceptable salt or ester thereof, wherein R1 is selected from: aryl; heteroaryl; —NHR3; fused aryl-C4-7-heterocycloalkyl; —CONR4R5; —NHCOR6; —C3-7-cycloalkyl; —O—C3-7-cycloalkyl; —NR3R6; and optionally substituted —C1-6 alkyl; wherein said aryl, heteroaryl, fused aryl-C4-7-heterocycloalkyl and C4-7-heterocycloalkyl are each optionally substituted; R2 is selected from hydrogen, aryl, C1-6-alkyl, C2-6-alkenyl, C3-7-cycloalkyl, heteroaryl, C4-7 heterocycloalkyl and halogen, wherein said C1-6-alkyl, C2-6-alkenyl, aryl, heteroaryl and C4-7-heterocycloalkyl are each optionally substituted; R3 is selected from aryl, heteroaryl, C4-7-heterocycloalkyl, C3-7-cycloalkyl, fused aryl-C4-7-heterocycloalkyl and C1-6-alkyl, each of which is optionally substituted; R4 and R5 are each independently hydrogen, or optionally substituted C3-7-cycloalkyl, aryl, heteroaryl, C1-6-alkyl or C3-6-heterocycloalkyl; or R4 and R5 together with the N to which they are attached form a C3-6-h

Abstract: A first aspect of the invention relates to a compound of formula (I), or a pharmaceutically acceptable salt or ester thereof, wherein: R1 is C3-8-cycloalkyl; X is O, NR7 or C3-6-heterocycloalkyl; R2 is aryl, heteroaryl, fused or unfused aryl-C3-6-heterocycloalkyl or fused or unfused heteroaryl-C3-6-heterocycloalkyl, each of which is optionally substituted by one or more substitutents selected from aryl, heteroaryl, C1-6-alkyl, C3-7-cycloalkyl and a group A, wherein said C1-6-alkyl group is optionally substituted by one or more substituents selected from aryl, heteroaryl, R10 and a group A, said heteroaryl group is optionally substituted by one or more R10 groups; and wherein said C3-6-heterocycloalkyl group optionally contains one or more groups selected from oxygen, sulfur, nitrogen and CO; R3 is C1-6-alkyl optionally substituted by one or more substituents selected from aryl, heteroaryl, —NR4R5, —OR6, —NR7(CO)R6, —NR7(CO)NR4R5, —NR7SO2R6, —NR7COOR7, —CONR4R5, C3-6-heterocycloalkyl and wherein R4