Patent ID: 7897773

Claim:
A compound of formula (I) wherein: X is a carbon; is a single bond or a double bond; R 1a , R 1b , R 1c , R 1d , R 2a and R 2b are hydrogen, R 3 is hydrogen; R 4 is: hydrogen or (C 1 -C 5 )alkyl, (C 3 -C 6 )cycloalkyl, heterocyclyl, (C 5 -C 10 ) monocyclic or bicyclic aryl, or (C 2 -C 9 ) monocyclic or bicyclic heteroaryl, wherein the aryl or heteroaryl group is optionally substituted with 1 to 4 substituents chosen from the group consisting of halogen, (C 1 -C 5 )alkyl, (C 1 -C 5 )alkoxy, (C 1 -C 5 )haloalkyl, hydroxyl, hydroxy(C 1 -C 5 )alkyl, (C 1 -C 5 )alkoxy(C 1 -C 5 )alkyl, cyano, optionally substituted phenyl, optionally substituted benzyl, —COOR 5 , —NR 6 R 7 , R 5 OOC—(C 1 -C 5 )alkyl, NR 6 R 7 —(C 1 -C 5 )alkyl, —CONR 6 R 7 , NR 6 R 7 —CO—(C 1 -C 5 )alkyl, —SO 2 NR 6 R 7 , and —NR 6 —COR 5 ; R 5 is hydrogen, (C 1 -C 5 )alkyl or (C 3 -C 6 )cycloalkyl; and R 6 and R 7 , are independently hydrogen, (C 1 -C 5 )alkyl, (C 3 -C 6 )cycloalkyl, (C 1 -C 5 )alkylcarbonyl, hydroxymethyl(C 1 -C 5 )alkyl, (C 1 -C 5 )alkoxymethyl(C 1 -C 5 )alkyl, aryl or —SO 2 —R 5 , or R 6 and R 7 , taken together with the nitrogen atom to which they are attached, form an optionally substituted heterocyclyl; or a salt thereof, or an enantiomer or diastereoisomer thereof.