title: Anticholinergic agents. Synthesis of 4-diphenylmethylene-1,1,2,3-tetramethylpyrrolidinium iodide.
mesh_terms: D010276:Parasympatholytics / Q000138:chemical synthesis*; D011759:Pyrrolidines / Q000138:chemical synthesis* / Q000494:pharmacology; D013237:Stereoisomerism
chemical_list: D010276:Parasympatholytics; D011759:Pyrrolidines