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
描述了季铵化的内-7-甲基-7-氮杂双环[2.2.1]庚-2-醇(4,RS-11635)的α-环戊基扁桃酸酯的合成。该合成的关键步骤包括4-(N-甲基氨基)-1,2-环氧环己烷(8)的分子内跨双轴环氧化物开环,以形成内氮杂双环结构9。通过静脉内给药评估抗胆碱能支气管扩张剂的活性乙酰甲胆碱攻击的豚鼠表明4的效力大约是异丙托溴铵的两倍(ED50为1.1对2微克/ kg),并且作用持续时间几乎是前者的五倍(230对50分钟)。