title: Tetracycline derivatives. Note III - 7- and 9-methyltetracyclines: synthesis and biological activity.
abstract: The synthesis of some 7- and 9-methyltetracyclines is reported together with the biological activity of the new compounds.
mesh_terms: D001419:Bacteria / Q000187:drug effects; D004353:Drug Evaluation, Preclinical; D008826:Microbial Sensitivity Tests; D013752:Tetracycline / Q000494:pharmacology; D013754:Tetracyclines / Q000138:chemical synthesis
chemical_list: D013754:Tetracyclines; D013752:Tetracycline