Synthesis and antimicrobial activities of novel biologically active heterocycles: 10h-phenothiazines, their ribofuranosides, and sulfone derivatives.

This article deals with the synthesis and antimicrobial activity of a series of novel substituted 10H-phenothiazines, their ribofuranosides, and sulfone derivatives. 10H-Phenothiazines were prepared by Smiles rearrangement. These prepared phenothiazines were used as the base to prepare ribofuranosides by treatment with sugar (1-O-acetyl-2,3,5-tri-O-benzoylribofuranose). Sulfone derivatives were prepared by the oxidation of 10H-phenothiazines. The structure of the synthesized compounds was established by elemental analysis and spectroscopic data.