Some novel benzimidazole derivatives were synthesized and their in vitro effects on rat liver microsomal NADPHdependent lipid peroxidation (LP) level, ethoxyresorufin O-deethylase (EROD) and antifungal activities were determined. A significant decrease in male rat liver microsomal LP level was noted by compounds 4c (52%), 4e (58%) and 4h (43%) at 10 23 M concentration. Compounds 4c (100.0%), 4h (100.0%), 5c (98.0%) and 5h (100.0%) inhibited the microsomal ethoxyresorufin O-deethylase (EROD) enzyme activity better than that of the specific inhibitor caffeine (85%). Among these compounds, only compounds 4b and 4h exhibited moderate activity against C.albicans whereas the others had weak effects.

In this study, two new series of 2-amino-1,3,4-oxadiazoles and 5-aryl-1,3,4-oxadiazoles carrying a benzimidazole moiety were synthesized. The antioxidant properties of these compounds were investigated in vitro by the determination of the microsomal NADPH-dependent inhibition of lipid peroxidation levels (LP), the microsomal ethoxyresorufin O-deethylase activity (EROD), and DPPH radical scavenger effects. Among the tested compounds, 2-[(2-(4-chlorophenyl)-1H-benzo[d]imidazole-1-yl)methyl]-5-(4-fluorophenyl)-1,3,4-oxadiazole (9) was found to be the most active compound in all three in vitro systems.

Beim Übergang von CuCr2Te4 aus dem ferro‐ in den paramagnetischen Zustand ändert sich der Charakter der Temperaturabhängigkeit der Thermo‐EMK, und die Temperaturabhängigkeit der elektrischen Leitfähigkeit zeigt eine leichte Anomalie.

FeCr2S4 und FeCr2Se4 besitzen auf den Kurven der elektrischen Leitfähigkeit und der Thermokraft als Funktion der Temperatur starke Anomalien beim magnetischen Phasenübergang, die bei FeCr2Te4 fehlen.

Two new series of 2‐amino‐1,3,4‐oxadiazoles (III) and 5‐aryl‐1,3,4‐oxadiazoles (V) bearing a benzimidazole moiety are synthesized.