The invention relates to compounds of the formula ##STR1## wherein R is hydrogen or lower alkyl, Y is alkylene; Z is alkylene, ##STR2## the asterisk herein denotes bonding to the substituted acetophenone; R.sub.2 is hydrogen or lower alkoxy; and n is an integer of 1 to 3; A is ##STR3## and HET is a 5-or 6- membered nitrogen containing heterocyclic group, and their acid addition salts. The compounds of formula I of the invention are useful for the treatment of allergic conditions, such as, asthma and cardiovascular diseases, such as, angina and arrhythmias.
本发明涉及一种公式为##STR1##的化合物,其中R为氢或低级烷基,Y为烷基;Z为烷基,##STR2##此处星号表示与取代的
乙酰苯酮结合;R.sub.2为氢或低级烷氧基;n为1至3的整数;A为##STR3##,HET为含有5或6个成员的氮杂环异构基团,以及它们的酸加成盐。本发明的I型化合物可用于治疗过敏症,如哮喘和心血管疾病,如心绞痛和心律失常。