Synthesis of pyridine-containing derivatives of the alkaloids cytisine and <Emphasis Type="Italic">d</Emphasis>-pseudoephedrine

10-(2-N-Cytisino-), (-anabasino-), and (-d-pseudoephedrino-)acetyl- and -propionylphenothiazines were synthesized by reaction of chloroacyl derivatives of phenothiazine with the alkaloids cytisine, anabasine, and d-pseudoephedrine. The compositions and structures of the products were confirmed by IR and PMR spectroscopy and mass spectrometry. One of several samples showed clearly pronounced antioxidant activity.