The invention provides imidazole derivatives represented by the formula:
(or the corresponding keto form) wherein Y is a hydroxy group, a lower alkoxy group or an amino group, and their pharmaceutically acceptable salts. These compounds have a potent immunostimulating activity and are useful for the prevention and immunostimulatory therapy of various diseases. The compounds where Y is alkoxy of 1 to 4 carbon atoms or amino may be prepared by reacting aminomalonamide with an imide ester
or a salt thereof or with an orthoester
where R2 is an imido ester moiety and R3 is alkyl, and the product compounds where Y is lower alkoxy can be hydrolysed to give the corresponding compound where Y is hydroxy.
本发明提供了由式表示的
咪唑衍
生物:
(或相应的酮形式)其中 Y 为羟基、低级烷氧基或
氨基的
咪唑衍
生物及其药学上可接受的盐类。这些化合物具有强大的免疫刺激活性,可用于各种疾病的预防和免疫刺激治疗。Y 为 1 至 4 个碳原子的烷氧基或
氨基的化合物可通过将
氨基丙二酰胺与
酰亚胺酯或其盐反应制备
或其盐,或与原酯反应制备。
其中 R2 为
亚胺酯分子,R3 为烷基,Y 为低级烷氧基的产物化合物经
水解可得到 Y 为羟基的相应化合物。