申请人:Nihon Medi-Physics Co., Ltd.
公开号:US08022207B2
公开(公告)日:2011-09-20
The invention relates to a compound which has affinity with amyloid, shows sufficiently rapid clearance from normal tissues and is suppressed in toxicity such as mutagenicity, and also relates to a low-toxic diagnostic agent for Alzheimer's disease containing the compound. The compound is represented by the following formula (1) or a salt thereof:
wherein A1, A2, A3 and A4 independently represent a carbon or a nitrogen, and
R3 is a group represented by the following formula:
wherein R1 is a radioactive halogen substituent; m is an integer of 0 to 4; and n is an integer of 0 or 1, provided that at least one of A1, A2, A3 and A4 represents a carbon, and R3 binds to a carbon represented by A1, A2, A3 or A4.
本发明涉及一种具有与淀粉样物质亲和力、从正常组织中快速清除并且毒性被抑制,如致突变性的化合物,以及一种含有该化合物的低毒性阿尔茨海默病诊断剂。该化合物由以下式(1)或其盐表示:其中A1、A2、A3和A4独立地代表碳或氮,R3是由以下式表示的基团:其中R1是放射性卤素取代基;m为0到4的整数;n为0或1的整数,但至少有一个A1、A2、A3和A4代表碳,并且R3结合到由A1、A2、A3或A4表示的碳上。