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 A
1
, A
2
, A
3
and A
4
independently represent a carbon or a nitrogen, and
R
3
is a group represented by the following formula:
wherein R
1
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 A
1
, A
2
, A
3
and A
4
represents a carbon, and R
3
binds to a carbon represented by A
1
, A
2
, A
3
or A
4
.
USE OF NOVEL COMPOUND HAVING AFFINITY FOR AMYLOID, AND PROCESS FOR PRODUCTION OF THE SAME
申请人:Nihon Medi-Physics Co., Ltd.
公开号:EP2216051A1
公开(公告)日:2010-08-11
The invention provides a reagent for detecting amyloid in a biological tissue which can detect amyloid in vitro and in vivo with high sensitivity using a compound which has affinity with amyloid and is suppressed in toxicity such as mutagenicity.
The reagent for detecting amyloid deposited in a biological tissue comprises the compound 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, A3, A3 and A4 represents a carbon, and R5 binds to a carbon represented by A1, A2, A3 or A4.
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.