127424-06-0Relevant articles and documents
Synthesis and Muscarinic Activities of Quinuclidin-3-yltriazole and -tetrazole Derivatives
Wadsworth, Harry J.,Jenkins, Sarah M.,Orlek, Barry S.,Cassidy, Frederick,Clark, Michael S. G.,et al.
, p. 1280 - 1290 (2007/10/02)
The synthesis of 15 methyl or unsubstituted 1,2,3-triazoles, 1,2,4-triazoles, and tetrazoles additionally substituted with a 1-azabicyclooctan-3-yl group is described.The potency and efficacy of these compounds as muscarinic ligands were determined in radioligand binding assays using oxotremorine and quinuclidinyl benzilate.Potency and efficacy were found in compounds in which the azole moiety was attached to the azabicyclic ring either through a carbon atom or a nitrogen atom.Electrostatic potential maps of both the C-linked and the novel N-linked series of compounds were calculated.A relationship between position and depth of the electrostatic minima relative to the azabicyclic ring and the potency and efficacy of the compounds was determined.
Substituent variation in azabicyclic triazole- and tetrazole-based muscarinic receptor ligands
Jenkins,Wadsworth,Bromidge,Orlek,Wyman,Riley,Hawkins
, p. 2392 - 2406 (2007/10/02)
The effect of variation of the 1-azabicyclic substituent on the novel 1,2,3-triazol-4-yl-, 1,2,4-triazol-1-yl-, tetrazol-5-yl-, and tetrazol-2-yl- based muscarinic receptor ligands has been studied, and the exo- azabicyclic[2.2.1]hept-3-yl substituent was found to give the most potent and efficacious compounds. In addition, variation of the second substituent on 1,2,4-triazol-1-yl- and tetrazol-2-yl-based muscarinic receptor ligands has yielded a series of novel compounds with high potencies and efficacies, ranging from full agonists to antagonists. Small lipophilic electron withdrawing substituents give potent but low efficacy compounds, while small polar electron donating substituents give potent and efficacious compounds. The activity of these compounds is described in terms of a model of the receptor involving lipophilic and hydrogen bonding interactions. These compounds provide muscarinic ligands with high potency and a range of efficacies suitable for testing as candidate drugs in the treatment of Alzheimer's disease.