title: Piperazine derivatives of methylxanthines. I - Chemical and pharmacological properties of 8-piperazinotheophyllines.
mesh_terms: D000700:Analgesics / Q000138:chemical synthesis; D000818:Animals; D000959:Antihypertensive Agents / Q000138:chemical synthesis; D001775:Blood Circulation / Q000187:drug effects; D002415:Cats; D005260:Female; D006168:Guinea Pigs; D006633:Histamine Antagonists; D008297:Male; D051379:Mice; D010276:Parasympatholytics / Q000138:chemical synthesis; D010879:Piperazines / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity; D011817:Rabbits; D051381:Rats; D013806:Theophylline / Q000031:analogs & derivatives* / Q000494:pharmacology / Q000633:toxicity
chemical_list: D000700:Analgesics; D000959:Antihypertensive Agents; D006633:Histamine Antagonists; D010276:Parasympatholytics; D010879:Piperazines; D013806:Theophylline