申请人:Nagano Tetsuo
公开号:US20060030054A1
公开(公告)日:2006-02-09
A fluorescent probe which is represented by the following formula (I):
(wherein, R
1
and R
2
represent hydrogen atom, or a substituent for trapping proton, a metal ion, or an active oxygen species, or the like; R
3
represents a monovalent substituent; R
4
and R
5
represent hydrogen atom or a halogen atom; R
6
represents hydrogen atom, an alkylcarbonyl group, or an alkylcarbonyloxymethyl group, provided that a combination of R
1
, R
2
, and R
3
provides (1) substantially high electron density of the benzene ring to which said groups bind, so that the compound represented by the formula (I) is substantially no fluorescent before the trapping of proton, or the like, and (2) substantially reduced electron density of the benzene ring to which said groups bind, so that a compound after the trapping, which is derived from the compound represented by the formula (I) is substantially highly fluorescent after the trapping of proton or the like). A fluorescent probe having an excellent fluorescence property is provided.
由下式(I)表示的荧光探针:
(其中,R
1
和 R
2
代表氢原子,或代表用于捕获质子的取代基、金属离子或活性氧等;R
3
代表一价取代基;R
4
和 R
5
代表氢原子或卤素原子;R
6
代表氢原子、烷基羰基或烷基羰氧甲基,条件是 R
1
, R
2
和 R
3
提供(1)所述基团结合的苯环电子密度高,因此式(I)代表的化合物在捕获质子或类似物之前基本上无荧光,以及(2)所述基团结合的苯环电子密度低,因此捕获质子或类似物后,由式(I)代表的化合物衍生的化合物在捕获质子或类似物后基本上具有高荧光。)本发明提供了一种具有优异荧光特性的荧光探针。