摘要 |
A radioactive halogen-labeled phenyoxyaniline derivative represented by the following formula: wherein R 1 represents a group such as an alkyl group; X 1 , X 2 , X 3 and X 4 represent each a hydrogen atom, an alkyl group, an alkoxy group, an alkoxy group carrying 11 C introduced thereinto or a radioactive halogen atom, provided that at least one of X 1 , X 2 , X 3 and X 4 represents an alkoxy group carrying 11 C introduced thereinto or a radioactive halogen atom; which is a compound useful as a PBR ligand having a high affinity and a high selectivity. In in vitro measurement of PBR, a PBR ligand having a high affinity and a high selectivity is labeled with a radioactive halogen nuclear species so as to enable the measurement of PBR in vivo with the use of means including not only PET but also SPECT. Thus, a compound which is useful in early diagnosing, preventing and treating diseases such as Alzheimer type dementia can be obtained. |
申请人 |
TAISHO PHARMACEUTICAL CO., LTD |
发明人 |
SUZUKI, KAZUTOSHI;SUHARA, TETSUYA;HALLDIN, CHRISTER;ZHANG, MING-RONG;NAKAZATO, ATSURO |