申请人:Yoshitomi Pharmaceutical Industries, Ltd.
公开号:US03931199A1
公开(公告)日:1976-01-06
Heterocyclic compounds of the formula: ##SPC1## Wherein A is a carbonyl group, a methylene group or an alkylidene group having 2 to 4 carbon atoms; B is an oxygen atom, a sulfur atom or --N(R')-- (wherein R' is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms); each of R.sup.1 and R.sup.2 is a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or a phenyl group which may be substituted by a halogen atom, an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; X is an alkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms or OM (wherein M is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a metal atom or NH.sub.4); and ring P represents a pyridine ring, are useful as anti-allergic agents.
公式为:##SPC1## 其中,A是羰基基团、亚甲基基团或具有2至4个碳原子的烷基基团;B是氧原子、硫原子或--N(R')--(其中,R'是氢原子或具有1至4个碳原子的烷基基团);R1和R2中的每一个都是氢原子、卤素原子、具有1至4个碳原子的烷基基团、具有1至4个碳原子的烷氧基团或苯基,该苯基可以被卤素原子、具有1至4个碳原子的烷基基团或具有1至4个碳原子的烷氧基团取代;X是具有1至4个碳原子的烷基基团、具有3至6个碳原子的环烷基团或OM(其中,M是氢原子、具有1至4个碳原子的烷基基团、金属原子或NH.sub.4);环P代表吡啶环,可用作抗过敏剂。