A Fluorogenic Reagent, 4-Mercapto-7-methylthio-2,1,3-benzoxadiazole for Carboxylic Acids, Designed by Prediction of the Fluorescence Intensity
作者:Seiichi Uchiyama、Tomofumi Santa、Kazuhiro Imai
DOI:10.1021/ac001232j
日期:2001.5.1
fluorogenic reagents having a 4,7-disubstituted benzofurazan structure, we previously proposed 7-acetylamino-4-mercapto-2,1,3-benzoxadiazole (AABD-SH) as a fluorogenic reagent for carboxylic acids. Since then, progress has made it possible to estimate the fluorescence quantum yields of the 4,7-disubstituted benzofurazan compounds on the basis of the PM3 calculation of their S1-T2 energies. Subsequently, a
在我们研究开发具有4,7-二取代的苯并呋喃结构的荧光试剂的过程中,我们先前提出了7-乙酰氨基-4-巯基-2,1,3-苯并恶二唑(AABD-SH)作为荧光试剂用于羧酸。从那时起,根据PM3计算其S1-T2能量,可以估算4,7-二取代的苯并呋喃山化合物的荧光量子产率。随后,设计并合成了一种新型的荧光试剂4-巯基-7-甲硫基2,1,3-苯并恶二唑(MTBDSH)。在存在缩合试剂,三苯膦(TPP)和2,2'-二吡啶基二硫化物(DPDS)的情况下,MTBD-SH易于在室温下1分钟内与正辛酸反应。五种羧酸的衍生物(正辛酸,正癸酸,月桂酸,肉豆蔻酸和棕榈酸)在反相色谱柱上进行了很好的分离,并在391 nm处用391 nm激发进行了荧光检测。检出限(S / N = 3)为2.4-5.0 fmol。因此,MTBD-SH具有被认为是优异的性能。对于羧酸,它不仅优于AABD-SH,而且优于许多其他常规试剂。根据