我们合成了带有对甲苯磺酰基(Ts-OF)基团的黄素N(5)氧化物衍生物,作为“开启”荧光探针,用于检测多种抗氧化剂氨基酸和生物硫醇。以二硫苏糖醇为还原剂合成了氧化黄酮。在一些氨基酸和生物硫醇的存在下,例如组氨酸(His),蛋氨酸(Met),半胱氨酸(Cys),谷胱甘肽(GSH)和高半胱氨酸(Hcy),Ts-OF显示出光驱动的荧光增强。的1项1 H NMR研究表明所述的还原消去p甲苯磺酰基从TS-OF中抗氧化剂和光照射的存在。
我们合成了带有对甲苯磺酰基(Ts-OF)基团的黄素N(5)氧化物衍生物,作为“开启”荧光探针,用于检测多种抗氧化剂氨基酸和生物硫醇。以二硫苏糖醇为还原剂合成了氧化黄酮。在一些氨基酸和生物硫醇的存在下,例如组氨酸(His),蛋氨酸(Met),半胱氨酸(Cys),谷胱甘肽(GSH)和高半胱氨酸(Hcy),Ts-OF显示出光驱动的荧光增强。的1项1 H NMR研究表明所述的还原消去p甲苯磺酰基从TS-OF中抗氧化剂和光照射的存在。
In order to link to the 5'-end of oligonucleotides the flavin analogs 9a,b possessing only one terminal hydroxy group on the side chain, the phosphoramidite and the H-phosphonate coupling methods were developed. Surprisingly, after reaction of compounds 9a,b with 2-cyanoethyl N,N-diisopropylchlorophosphoramidite, the flavin phosphoramidates 11a,b were isolated instead of the expected phosphoramidite derivatives 10a,b. A very efficient photooxidation process occurred probably during the isolation of the products. From the prepared flavin H-phosphonates 12a,b, flavin-thymine nucleotides and flavin-oligonucleotide adducts were synthesized for the first time. The versatility of the method was demonstrated in the oxidation step with the synthesis of the flavin-thymine nucleotides 15-17 possessing a phosphodiester, a phosphorothioate, and a methyl phosphate linkage, respectively. This method is of general interest with regard to the extensive research developed for preparing flavin analogs and modified oligonucleotides possessing interesting biological or/and catalytic properties.
Flavin-Based Light-Driven Fluorescent Probe for the Detection of Antioxidant Amino Acids
作者:Kyeong-Im Hong、Seong Min Lee、Woo-Dong Jang
DOI:10.1002/open.201700144
日期:2018.1
(Ts‐OF) group as a “turn‐on” fluorescentprobe for the detection of several antioxidant amino acids and biothiols. Oxidized flavin was synthesized by using dithiothreitol as the reducing agent. Ts‐OF showed a light‐driven fluorescence enhancement in the presence of several amino acids and biothiols such as histidine (His), methionine (Met), cysteine (Cys), glutathione (GSH), and homocysteine (Hcy). The 1H NMR
我们合成了带有对甲苯磺酰基(Ts-OF)基团的黄素N(5)氧化物衍生物,作为“开启”荧光探针,用于检测多种抗氧化剂氨基酸和生物硫醇。以二硫苏糖醇为还原剂合成了氧化黄酮。在一些氨基酸和生物硫醇的存在下,例如组氨酸(His),蛋氨酸(Met),半胱氨酸(Cys),谷胱甘肽(GSH)和高半胱氨酸(Hcy),Ts-OF显示出光驱动的荧光增强。的1项1 H NMR研究表明所述的还原消去p甲苯磺酰基从TS-OF中抗氧化剂和光照射的存在。