title: [Synthesis of protoberberine derivatives as hypotensive. (Studies on the syntheses of heterocyclic compounds. 458.)].
mesh_terms: D000959:Antihypertensive Agents / Q000138:chemical synthesis*; D001600:Berberine Alkaloids / Q000138:chemical synthesis*
chemical_list: D000959:Antihypertensive Agents; D001600:Berberine Alkaloids