INSECTICIDE PREPARATIONS AND A PROCESS FOR PREPARING THEIR ACTIVE AGENT

The invention relates to new compounds of the general formula (I) wherein R1 is hydrogen or a lower alkoxy group and Z1 is hydrogen, or R1 and Z1 form together a double bond, Z2 is hydrogen and B is hydroxy, or Z2 and B form together a double bond, Z3 and Z4 each stand for hydrogen or they form to gether an ethylene group, or Z4 and D form together a double bond, C is oxygen atom or a lower alkoxy group, D is a valence bond if C stands for oxygen, or otherwise D forms a double bond together with Z4 or Z5, Z5 forms a double bond together with D or represents hydrogen, and R is a group of the general formula -COOR3, wherein R3 is lower alkyl, or Z5 and R2 form together a 1-oxo-2-oxa-tetramethylene group, with the proviso, that if Z3 and Z4 form together an \\ ethylene group, R2 may stand only for a -COOR3 group, insecticidal compositions containing them, as well as to a process for their preparation.