Synthesis of some new 10H-pyrido[3,2-Z)][1,4]benzothiazine and their ribofuranosides as possible chemotherapeutic agents

摘要

N-(2 ',3 ',5 '-tri-O-benzoyl-β-D-ribofuranosyl)-8-chloro-7-methyl/7,9-dimethyl/8-chloro-9-methyl-3-nitro pyrido[3,2-b][1,4]benzothiazine have been synthesized by the treatment of 10H-8-chloro-7-methyl/ 7,9-dimethyl/8-chloro-9-methyl-3-nitropyrido[3,2-6][l,4]benzothiazines-with β-D-ribofuranose-1-acetate-2,3,5-tribenzoate in toluene. Compounds 10H-8-chloro-7-methyl/7,9-dimethyl/8-chloro-9-methyl-3-nitro pyrido[3,2-B][1,4]benzothiazine and 10-acetyl-8-chloro-7-methyl/7,9-dimethyl/ 8-chloro-9-methyl-3-nitro pyrido[3,2-6][1,4]benzothiazine-5-oxide have been synthesized. The structure of all the synthesized compounds have been established by elemental analysis, IR and ~1H NMR spectral data. All the synthesized heterocyclic compounds and their ribofuranosides have been screened for their antibacterial and antifungal activity.