申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US03965122A1
公开(公告)日:1976-06-22
Chromone compounds having the structure ##SPC1## Wherein R is aryl, substituted aryl, thienyl, furyl or pyridyl, Y is hydroxy(lower)alkylene, R.sub.1 is hydrogen, lower alkyl, aryl, substituted aryl or a heterocyclic group, R.sub.2 is hydrogen or lower alkoxy, Y.sub.1 is lower alkylene or hydroxyl(lower)alkylene, Z is oxygen or sulfur and R.sub.3 is hydrogen, lower alkyl, aryl, substituted aryl, or ar(lower)alkyl have anti-allergic activity and are useful in the treatment of asthma. Compounds of the structure [I] are prepared by reacting ##SPC2## Wherein Y' is hydroxy(lower)alkylene whose hydroxy group is optimally protected or a reactive derivative of [II] with a carboxylic acid of the formula R--COOH in the presence of a basic catalyst. The resulting compound is then reacted with an acid. Compounds of the structure [I'] are prepared by reacting the compound ##SPC3## With the compound X--Y.sub.1 '--Z--R.sub.3 ' wherein X is an acid residue, Y' is lower alkylene or hydroxy(lower)alkylene whose hydroxy group is optionally protected by a protective group, R.sub.3 ' is hydrogen, lower alkyl, aryl, substituted aryl, or ar(lower)alkyl and Z is as defined above. When R.sub.3 ' is hydrogen, --Z--R.sub.3 ' is optionally protected by a protective group. The resultant compound is subjected to an elimination reaction when Y' is a protected group or when --Z--R.sub.3 ' is protected to split off the protective group.
具有结构##SPC1##的Chromone化合物,其中R是芳基,取代芳基,噻吩基,呋喃基或吡啶基,Y是羟基(较低)烷基,R.sub.1是氢,较低烷基,芳基,取代芳基或杂环基,R.sub.2是氢或较低烷氧基,Y.sub.1是较低烷基或羟基(较低)烷基,Z是氧或硫,R.sub.3是氢,较低烷基,芳基,取代芳基或ar(较低)烷基,具有抗过敏活性,并可用于哮喘的治疗。结构式[I]的化合物通过在碱性催化剂存在下反应##SPC2##其中Y'是羟基(较低)烷基,其羟基固定或[II]的反应性衍生物,与公式为R-COOH的羧酸反应而制备。然后将所得化合物与酸反应。结构式[I']的化合物通过将化合物##SPC3##与化合物X-Y.sub.1 '--Z--R.sub.3'反应而制备,其中X是酸残基,Y'是较低烷基或羟基(较低)烷基,其羟基可选地由保护基固定,R.sub.3'是氢,较低烷基,芳基,取代芳基或ar(较低)烷基,Z如上所定义。当R.sub.3'为氢时,-Z-R.sub.3'可选地由保护基保护。当Y'为保护基或-Z-R.sub.3'被保护时,所得化合物经消除反应裂解保护基。