Synthesis and Muscarinic Properties of (1S*,3R*,5R*)-Trimethyl(1-methyl-6-oxabicyclo(3.1.0)hex-3-yl)methyl Ammonium Iodide.
作者:Mario GIANNELLA、Alessandro PIERGENTILI、Maria PIGINI、Wilma QUAGLIA、Giovanni RAFAIANI、Seyed K. TAYEBATI
DOI:10.1248/cpb.42.1286
日期:——
To acquire more information about the so-called "muscarinic subsite", compound 4 was synthesized and tested.The results show that in comparison with deoxamuscarine (23) the muscarinic potency of 4 on M2 and M3 subtypes is not significantly altered by the presence of an epoxidic function, which confirms the donor-acceptor hydrogen bonding charactor of this receptive site. Conversely, there is a negative influence on the transduction prosesses. In addition, a second hydroxylic function bound on the carbon carrying the terminal methyl of the fourth substituent on the nitrogen dramatically affects the muscarinic behavior; the resulting compounds (11-1) lack any agonist or antagonist activity.