| abstract |
A compound selected from the formula 21a, an N-oxide and salt thereof ** Formula ** wherein R1 is ** Formula ** R4 is R4a or R4b with the proviso that: (a) when R4 is bound to a carbon ring member, said R4 is selected from R4a; and (b) when R4 is attached to a ring member nitrogen, said R4 is selected from R4b; each R4a is independently C1-C2 alkyl, C1-C2 halogenoalkyl or C1-C2 alkoxy; each R4b is independently C1-C2 alkyl or C1-C2 halogenoalkyl; A is CH2 or NH; W is O; ** Formula ** where the link of X1, X2 or X3 that is identified with "t" is connected to the carbon atom identified with "q" of formula 21a, the link that is identified with "u" is connected to the carbon atom that is identified with "r" of the formula 21a, and the link that is identified with "v" is connected to G; G is ** Formula ** where the link that projects to the left is attached to X, and the link that projects to the right is linked to Z1; and each R3a is independently selected from H or R3; each R3 is independently methyl or halogen; Z1 is a direct link; Y6 is -CHO, -CH> = NOH or -CCl> = NOH; K is 1 or 2. |