Directed modification of the structure of cytochrome P-450 substrates as a method of generating new inducers of the microsomal monooxygenase system

Using the previously obtained data on the substrate-type induction of monooxygenase by xenobiotics of phenobarbital type, the method of conversion of typical substrates for cytochrome P-450 into inducers of biosynthesis of this enzymatic system by blocking in the substrate molecule of the position subjected to oxidative conversion in the enzyme active center was tested. The introduction of the methyl group in the omega-1 position of amobarbital, of Cl- into positions 2 and 4 of biphenyl and the substitution of methyl groups for the isopropyl groups in the 4-N(CH3)2 position of aminopyrine provides for marked induction of these derivatives of cytochrome P-450 and some monooxygenase activities.