The abilities of 14 phenothiazines, 8 benzo[a]phenothiazines and 12 benz[c]acridines to induce an antibacterial effect against Escherichia coli K12 were compared. Several phenothiazines, which showed antiplasmid activity, displayed the most potent antibacterial activity. All benz[c]acridine derivatives were moderately antibacterial, whereas
The metabolism of benz[a]- and benz[c]acridine by liver and lung microsomes from untreated, phenobarbital (PB)-treated and benzo[k]fluoranthene (BkF)-treated rats has been studied by gas chromatography/mass spectrometry (GC/MS). Epoxidation and hydrolysis of the epoxides to dihydrodiols were found to be the
Using a beeswax/tricaprylin mixture as vehicle, three doses each of acridine, benz[a]acridine (BaAC), benz[c]acridine (BcAC), dibenz[a,h]-acridine (DBa,hAC) and dibenz[a,j]acridine (DBa,jAC) were injected into the lungs of 35 female Osborne-Mendel rats per group. To compare the carcinogenic potency of the heterocycles
This review summarizes our experiments which are investigating the relationship between the structure and activity of mainly phenothiazines, benzo[a]phenothiazines and benz[c]acridines. Phenothiazines had potent antiplasmid and antibacterial activities, but induced weak antimicrobial activity in vivo. Their antiplasmid activity seemed to
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