| abstract |
Heterocyclic compounds of the formula: WHEREIN ONE OF Y and Z is CH, the other being N, A is a straight or branched saturated hydrocarbon chain from C2 to C6 inclusive, X is chlorine, hydroxy, alkoxy or alkylthio each from C1 to C5 inclusive, R is hydrogen, alkyl, hydroxyalkyl or dihydroxyalkyl each from C1 to C3 inclusive, R' is halogen, alkyl or alkoxy each from C1 to C3 inclusive and n is 0, 1 or 2. |