[Drugs from the classes of tricyclic antidepressives and antiepileptics, nitrosatable under simulated human gastric conditions]. / Unter simulierten Bedingungen des menschlichen Magens nitrosierbare Arzneimittel aus den Gruppen der trizyklischen Antidepressiva und Antiepileptika.

The nitrosatability of Pryleugan (imipramine), Herphonal (trimipramine), and Finlepsin (carbamazepine) was investigated under simulated human gastric conditions using a colorimetric measuring method. All of them proved to be nitrosatable even at very low nitrite concentrations. In the presence of ascorbic acid, the formation of N-nitroso compounds under model conditions was inhibited markedly. N-nitroso-dihydrodibenzazepine and N-nitroso-dibenzazepine could be identified by thin layer chromatography as main products. The biological effects of these N-nitroso compounds are not known up to now.