1-azoniabicyclo{2.2.1}heptane derivatives and pharmaceutical compositions containing them

摘要

A compound of formula (I), wherein A is a divalent radical selected from A1)-O-CO-; A2)-CH2-O-CO; A3)-O-CH2-CO-; A4)-O-CH2-CH2-; A5)-N(R1)-CO-; A6)-N(R1)-CO-CO; A7)-N(R1)-CH2-CH2-; A8)-O-CH2-; wherein R1 is hydrogen or (C1-C4)alkyl, and Am is (1). Said compound is useful as a neurokinin receptor antagonist.