The present invention provides a composition for diagnosing amyloid-related diseases, comprising a compound represented by general formula (I):
wherein X represents O or the like; R1, R3, R4, R5, R6, R8 and R9 represent a hydrogen atom or the like; R2 represents a halogen atom or the like; and R7 represents a dimethylamino group or the like;
or the compound labeled with a radionuclide, or a pharmaceutically acceptable salt of the compound or the labeled compound. The compound represented by general formula (I) has all of the following properties: high binding specificity to amyloid β protein, high permeability through the blood-brain barrier, and rapid clearance from sites without senile plaques in the brain.
本发明提供了一种用于诊断淀粉样蛋白相关疾病的组合物,包括由通式(I)表示的化合物:
其中X代表O或类似物;R1、R3、R4、R5、R6、R8和R9代表氢原子或类似物;R2代表卤原子或类似物;R7代表
二甲氨基基团或类似物;
或者标记有放射性核素的化合物,或者化合物或标记化合物的药用盐。通式(I)表示的化合物具有以下所有特性:对淀粉样β蛋白具有高结合特异性,能够高透过血脑屏障,以及在大脑中无老年斑块的部位迅速清除。