| 1 | 
                
                    Drugs@FDA. U.S. Food and Drug Administration. U.S. Department of Health & Human Services. 2015
                    
                        
                    
                 | 
            
                        
                | 2 | 
                
                    Natural products as sources of new drugs over the last 25 years. J Nat Prod. 2007 Mar;70(3):461-77.
                    
                        
                    
                 | 
            
                        
                | 3 | 
                
                    Muscarinic cholinergic and histamine H1 receptor binding of phenothiazine drug metabolites. Life Sci. 1988;43(5):405-12.
                    
                        
                    
                 | 
            
                        
                | 4 | 
                
                    Design, synthesis, and neurochemical evaluation of 5-(3-alkyl-1,2,4- oxadiazol-5-yl)-1,4,5,6-tetrahydropyrimidines as M1 muscarinic receptor agonists. J Med Chem. 1993 Apr 2;36(7):842-7.
                    
                        
                    
                 | 
            
                        
                | 5 | 
                
                    Retinoic acid prevents virus-induced airway hyperreactivity and M2 receptor dysfunction via anti-inflammatory and antiviral effects. Am J Physiol Lung Cell Mol Physiol. 2009 Aug;297(2):L340-6.
                    
                        
                    
                 | 
            
                        
                | 6 | 
                
                    Medicinal plants in therapy. Bull World Health Organ. 1985;63(6):965-81.
                    
                        
                    
                 | 
            
                        
                | 7 | 
                
                    Additive protective effects of donepezil and nicotine against salsolinol-induced cytotoxicity in SH-SY5Y cells. Neurotox Res. 2009 Oct;16(3):194-204.
                    
                        
                    
                 | 
            
                        
                | 8 | 
                
                    Affinity profiles of various muscarinic antagonists for cloned human muscarinic acetylcholine receptor (mAChR) subtypes and mAChRs in rat heart and submandibular gland. Life Sci. 1999;64(25):2351-8.
                    
                        
                    
                 | 
            
                        
                | 9 | 
                
                    URL: http://www.guidetopharmacology.org Nucleic Acids Res. 2015 Oct 12. pii: gkv1037. The IUPHAR/BPS Guide to PHARMACOLOGY in 2016: towards curated quantitative interactions between 1300 protein targets and 6000 ligands. (Ligand id: 7354).
                    
                        
                    
                 | 
            
                        
                | 10 | 
                
                    Comparison of pharmacological effects of L- and DL-n-butyl-scopolamine in rat uterus. Yao Xue Xue Bao. 1994;29(1):24-7.
                    
                        
                    
                 | 
            
                        
                | 11 | 
                
                    Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34.
                    
                        
                    
                 | 
            
            
            
                 | 
                 | 
                 | 
                 | 
                 | 
                 |