申请人:The University of Tokyo
公开号:US20180052109A1
公开(公告)日:2018-02-22
[Problem] To provide a novel fluorescent probe for super-resolution imaging that uses fluorescent light emission characteristics that originate from an intermolecular nucleophilic addition-dissociation equilibrium reaction, and to provide a super-resolution fluorescent imaging method that uses the probe. [Solution] A fluorescent probe for super-resolution imaging that comprises a compound represented by formula (I) or a salt thereof(in the formula, X represents an oxygen atom, C(R
a
) (R
b
), or Si(R
a
) (R
b
) (wherein R
a
and R
b
each independently represent a hydrogen atom or an alkyl group), R
1
represents a hydrogen atom or an optionally substituted aryl (provided that, if R
1
is a phenyl group, the benzene ring of the phenyl group does not have a substituent at position 2 or position 6), R
2
and R
3
each independently represent 1-3 identical or differing substituents that are independently selected from the group that consists of hydrogen atoms, hydroxyl groups, halogen atoms, optionally substituted alkyl groups, optionally substituted sulfo groups, optionally substituted carboxyl groups, optionally substituted ester groups, optionally substituted amide groups, and optionally substituted azide groups, R
4
and R
5
each independently represent a hydrogen atom or an optionally substituted alkyl group or N(R
4
) (R
5
) forms an amide group or a carbamate group (provided that, if R
4
or R
5
is an alkyl group, each may form, together with R
2
, a ring structure that contains the nitrogen atom that is bonded thereto), and R
6
and R
7
each independently represent a hydrogen atom or an optionally substituted alkyl group or N(R
6
)(R
7
) forms an amide group or a carbamate group (provided that, if R
6
or R
7
is an alkyl group, each may form, together with R
3
, a ring structure that contains the nitrogen atom that is bonded thereto)), the fluorescent probe for super-resolution imaging being characterized in that the compound represented by formula (I) or the salt thereof undergoes a nucleophilic addition-dissociation equilibrium reaction with a nucleophilic compound that contains an —SH group.
提供一种新颖的荧光探针,用于超分辨率成像,利用源自分子间亲核加成-解离平衡反应的荧光发射特性,并提供使用该探针的超分辨率
荧光成像方法。超分辨率成像的荧光探针包括由式(I)表示的化合物或其盐(在该式中,X代表氧原子,C(Ra)(Rb)或Si(Ra)(Rb)(其中Ra和Rb各自独立表示氢原子或烷基),R1表示氢原子或可选择取代的芳基(前提是,如果R1是苯基,则苯基的苯环在2位或6位不具有取代基),R2和R3各自独立表示1-3个相同或不同的取代基,可从由氢原子、羟基、卤原子、可选择取代的烷基、可选择取代的磺基、可选择取代的羧基、可选择取代的酯基、可选择取代的酰胺基和可选择取代的
叠氮基组成的基团中独立选择,R4和R5各自独立表示氢原子或可选择取代的烷基或N(R4)(R5)形成酰胺基或羰酸酯基(前提是,如果R4或R5是烷基,则每个可与R2一起形成含有与其结合的氮原子的环结构),R6和R7各自独立表示氢原子或可选择取代的烷基或N(R6)(R7)形成酰胺基或羰酸酯基(前提是,如果R6或R7是烷基,则每个可与R3一起形成含有与其结合的氮原子的环结构)。超分辨率成像的荧光探针的特征在于,由式(I)表示的化合物或其盐与含有—SH基团的亲核化合物发生亲核加成-解离平衡反应。