Patent ID: 7485632

Claim:
A compound of formula wherein W is CH or N, R 1 is hydroxy, (C 1-6 )alkoxy, halo(C 1-6 )alkoxy, hydroxycarbonyl(C 1-6 )alkoxy or (C 1-6 )alkoxycarbonyl(C 1-6 )alkoxy, R 2 is hydrogen or an ester moiety, R 3 is hydrogen, (C 1-6 )alkyl, (C 2-6 )alkenyl or (C 3-8 )cycloalkyl, R 4 is hydrogen or (C 1-6 )alkyl, is cyclohexyl or phenyl, R 5 and R 6 independently of each other are hydrogen; (C 1-6 )alkyl; (C 2-6 )alkenyl; (C 6-18 )arylcarbonyl; (C 1-6 )alkylcarbonyl; (C 6-18 )aryloxy(C 1-4 )alkylcarbonyl; (C 1-6 ) alkylcarbonyl -(C 6-18 )arylcarbonyl; heterocyclyl(C 1-6 )alkylcarbonyl, wherein heterocyclyl comprises 5 or 6 ring members and 1 to 4 heteroatoms selected from N, O or S; (C 1-6 )alkylsulfonyl or (C 6-18 )arylsulfonyl, X is NH, O, S or N—R 8 , wherein R 8 is (C 1-6 )alkyl or (C 3-8 )cycloalkyl, Y is O or S, and n and m independently of each other are 0 or 1.