Near-infrared molecular probe based on malondialdehyde response, preparation method and application thereof
A molecular probe and near-infrared technology, applied in the field of biosensors, can solve the problems of insufficient wavelength of MDA probes, probes limited to cell imaging, weakened effectiveness, etc., to improve short wavelength, poor penetration depth, and preparation speed Fast, achieve the effect of sensitivity
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Embodiment 1
[0062] The preparation of embodiment 1 CS-MDA molecular probe
[0063] like figure 2 Cyclohexanone (1 mL) was added dropwise to concentrated H 2 SO 4 (10 mL), then, 1 g of compound 1 (2-(4-(diethylamino)-2-hydroxybenzoyl)-6-nitrobenzoic acid) was added under stirring, the reaction mixture was stirred vigorously, and Heated at 90°C for 2 hours, then poured into ice water, and then the precipitated precipitate was filtered and washed quickly with water and petroleum ether to finally obtain compound 2(9-(2-carboxy-3-nitrophenyl)-6-( Diethylamino)-1,2,3,4-tetrahydroxanthine), a dark red viscous liquid, can be used in the next step without further purification;
[0064] Compound 2 and compound 3 ((E)-N-(2-(1-ethyl-3,3-dimethylindol-2-yl)vinyl)aniline) were dissolved in AcOH containing AcOH 2 In O, the molar ratio of compound 2 and compound 3 was 1:1, and then the reaction mixture was heated to 55 ° C for 60 minutes, and then the reaction system was extracted with saturated bri...
Embodiment 2
[0066] Example 2 Preparation of CS-A Molecular Probe
[0067] like figure 2 As shown, the synthesis method is the same as in Example 1, except that the compound 3 added is (E)-N-(2-(1-ethyl-3,3-dimethylbenzindol-2-yl)vinyl) aniline.
Embodiment 3
[0068] Example 3 Preparation of CS-B Molecular Probe
[0069] like figure 2 As shown, the synthesis method is the same as in Example 1, except that the added compound 3 is (E)-1-methyl-4-(2-(phenylamino)vinyl)quinoline-1-dimethyl.
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