Synthesis and Bronchodilator Activity of Endo-2-(2-Cyclopentyl-2-Hydroxy-2-Phenyl)Acetoxy-7-Methyl-7-Azabicyclo-[2.2.1]Heptane Methobromide, a Potent and Long-Acting Anticholinergic Agent
作者:Jürg R. Pfister、Walter E. Wymann、Robert M. Weissberg、Arthur M. Strosberg
DOI:10.1002/jps.2600740222
日期:1985.2
The synthesis of the alpha-cyclopentylmandelate ester of quaternized endo-7-methyl-7-azabicyclo[2.2.1]heptan-2-ol (4, RS-11635) is described. The key step of this synthesis consists of the intramolecular trans-diaxial epoxide opening of 4-(N-methylamino)-1,2-epoxycyclohexane (8) to form the endo-azabicyclic structure 9. Evaluation of anticholinergic bronchodilator activity by intravenous administration