title: An improved synthesis of gramicidin S via solid-phase. Synthesis and cyclization by the azide method.
mesh_terms: D001386:Azides; D002625:Chemistry, Organic; D003500:Cyclization; D008722:Methods; D055601:Organic Chemistry Phenomena; D010456:Peptides, Cyclic / Q000138:chemical synthesis; D014449:Tyrothricin / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D001386:Azides; D010456:Peptides, Cyclic; D014449:Tyrothricin