Patent ID: 7056915

Claim:
A compound of formula (Ia) or (Ib): wherein: Het is piperidinyl substituted or unsubstituted with one or more R 5 ; R 2 is hydrogen; R 3 is a hydrogen, C1–10 alkyl, C2–10alkylene, C3–8 cycloalkyl, arylC1–5alkyl or aryl wherein R 3 is substituted or unsubstituted by one or more R c ; R c is C1–10 alkyl, C3–8 cycloalkyl or aryl, R 4 is hydrogen; R 5 is hydrogen or C1–10 alkyl wherein R 1 and R 6 in the formulas (Ia) or (Ib) form a heteroring wherein each heteroring is substituted or unsubstituted by one or more R 7 ; each R 7 and R 8 are independently: C1–5 alkyl chain optionally halogenated, and X is ═O or the pharmaceutically acceptable acceptable salts, esters, tautomers, individual isomers and mixtures of isomers thereof with the proviso that N-(4-cyano-1-methyl-piperidin-4-yl)-3-cyclohexyl-2-(2-oxo-2H-benzo[e][1,3]oxazin-4-ylamino)-propionamide is excluded.