申请人:DAIICHI RADIOISOTOPE LABORATORIES, LTD.
公开号:EP1077071A1
公开(公告)日:2001-02-21
Drugs containing as the active ingredient compounds having a radioactive element and an organic substituent carrying an unpaired electron in a single molecule, for example, labeled nitroxyl compounds represented by general formula (I):
wherein L represents -CO- or -alkylene-CO-, R, R1, R2, R3, and R4 represent C1-4 alkyl, R5 represents H, C1-4 alkyl, carboxyl, or lower alkoxycarbonyl, m and k are either 0 or 1, and n is from 1 to 4, R6 represents methyl or ethyl, R7 represents H, methyl, ethyl, or carboxyl, A represents an aromatic ring having a radioactive element, and represents either a single or a double bond when m is 0, or a single bond when m is 1.
Use of these drugs makes it possible to easily obtain data about the spin labeling positions, thus providing a means for obtaining exact data relating to active oxygen or free radicals in vivo as biological images by nuclear magnetic resonance or biological magnetic measurement.
在单个分子中含有放射性元素和携带未配对电子的有机取代基的化合物作为活性成分的药物,例如通式(I)代表的标记
硝基化合物:
其中 L 代表-CO-或-亚烷基-CO-,R、R1、R2、R3 和 R4 代表 C1-4 烷基,R5 代表 H、C1-4 烷基、羧基或低级烷氧基羰基,m 和 k 为 0 或 1,n 为 1 至 4,R6 代表甲基或乙基,R7 代表 H、甲基、乙基或羧基,A 代表具有放射性元素的芳香环,当 m 为 0 时代表单键或双键,当 m 为 1 时代表单键。
使用这些药物可以很容易地获得有关自旋标记位置的数据,从而提供了一种通过核磁共振或
生物磁测量获得与体内活性氧或自由基有关的
生物图像的精确数据的方法。