Synthesis and Characterization of Four-functional Fluoresceins
作者:Judit E. Puskas、Gayatri Shrikhande、Kristof Molnar
DOI:10.1016/j.molliq.2023.121747
日期:2023.3
The synthesis of fluorescein-diacrylate (FL-DA) and four-functional fluoresceins (FL) by Michael addition of secondary amines to FL-DA was investigated. FL-DA was successfully synthesized at the ∼ 100 g level. Diallyl amine (DAA) reacted with FL-DA instantaneously. Diethanolamine (DEA) also reacted within 5 min but was unstable and hydrolyzed back to FL. Michael addition of aminodiols with longer carbon
研究了通过将仲胺迈克尔加成到 FL-DA 来合成荧光素-二丙烯酸酯 (FL-DA) 和四官能团荧光素 (FL) 。FL-DA 在~ 100 g 水平上成功合成。二烯丙基胺 (DAA) 与 FL-DA 立即发生反应。二乙醇胺 (DEA) 也在 5 分钟内发生反应,但不稳定并水解回 FL。Michael 添加具有较长碳链的氨基二醇和二乙氨基二乙酸酯 (DIDA) 的速度较慢,但可以使用南极假丝酵母脂肪酶 B (CALB) 作为生物催化剂来加速。四官能团荧光素的结构由13 C 和1核磁共振。高分辨率质谱 (HRMS) 表明形成了非常纯的四烯丙基和四乙基乙酸荧光素。这些多功能荧光素是合成用于各种应用的显像剂的良好候选者。
ACRYLIC HYDROGELS WITH PENDANT CYCLODEXTRINS, PREPARATION METHOD THEREOF AND USE OF SAME AS RELEASE SYSTEMS AND CONTACT LENS COMPONENTS
申请人:Universidade De Santiago De Compostela
公开号:EP2314640B1
公开(公告)日:2015-07-01
COMPOSITIONS AND METHODS FOR TAGGING AND DETECTING NUCLEIC ACIDS
申请人:Nanoco Technologies Ltd.
公开号:US20210190775A1
公开(公告)日:2021-06-24
Compositions of matter according to the disclosure include a nanoparticle-dye conjugate having a photoluminescent or fluorescent nanoparticle associated with a fluorescent dye. Methods of imaging a biological sample according to the disclosure include treating a biological sample with a composition of matter a nanoparticle-dye conjugate, associating the nanoparticle-dye conjugate with the biological sample, and imaging the nanoparticle-dye conjugate associated biological sample.
A fluorescein-based probe with high selectivity to cysteine over homocysteine and glutathione
A highly selective, visible-light-excited and OFF–ON fluorescent chemodosimeter 1 employed conjugateaddition/cyclizationsequence mechanism, was designed and synthesized to discriminatively detect cysteine (Cys) and homocysteine (Hcy). The addition of Cys and Hcy resulted in the color of the solution of 1 changing from colorless to green under the simulation of physiological condition, and 1 could