Patent ID: 7067660

Claim:
A compound of formula II, wherein A represents CH or N; R 1 represents H, lower alkyl (which alkyl group is optionally interrupted by O), Het, alkylHet, aryl or alkylaryl, which latter five groups are all optionally substituted (and/or, in the case of lower alkyl, optionally terminated) by one or more substituents selected from halo, cyano, nitro, lower alkyl, OR 5 , C(O)R 6 , C(O)OR 7 , C(O)NR 8 R 9 , NR 10a R 10b and SO 2 NR 11a R 11b ; R 2 and R 4 independently represent lower alkyl; R 3 represents lower alkyl, which alkyl group is optionally interrupted by oxygen; Het represents an optionally substituted four- to twelve-membered heterocyclic group, which group contains one or more heteroatoms selected from nitrogen, oxygen and sulfur; R 5 , R 6 , R 7 , R 8 , R 9 , R 11a and R 11b independently represent H or lower alkyl; R 10a and R 10b either independently represent, H or lower alkyl or, together with the nitrogen atom to which they are attached, represent azetidinyl, pyrollidinyl or piperidinyl.