“Reduced” Coumarin Dyes with an <i>O</i>
-Phosphorylated 2,2-Dimethyl-4-(hydroxymethyl)-1,2,3,4-tetrahydroquinoline Fragment: Synthesis, Spectra, and STED Microscopy
作者:Shamil Nizamov、Maksim V. Sednev、Mariano L. Bossi、Elke Hebisch、Holm Frauendorf、Stephan E. Lehnart、Vladimir N. Belov、Stefan W. Hell
DOI:10.1002/chem.201601252
日期:2016.8.8
blue, green, and red regions of the visible spectrum were synthesized. For this purpose, N‐substituted and O‐protected 1,2‐dihydro‐7‐hydroxy‐2,2,4‐trimethylquinoline was oxidized with SeO2 to the corresponding α,β‐unsaturated aldehyde and then reduced with NaBH4 in a “one‐pot” fashion to yield N‐substituted and 7‐O‐protected 4‐(hydroxymethyl)‐7‐hydroxy‐2,2‐dimethyl‐1,2,3,4‐tetrahydroquinoline as a
合成了带有可见光谱的蓝色,绿色和红色区域的O-磷酸化的4-(羟甲基)-2,2-二甲基-1,2,3,4-四氢喹啉片段的大型Stokes-shift香豆素染料。为此,将N-取代的和O-保护的1,2-二氢-7-羟基-2,2,4-三甲基喹啉用SeO 2氧化为相应的α,β-不饱和醛,然后在NaBH 4中将其还原。 “一锅”方式产生N取代和7 O受保护的4-(羟甲基)-7-羟基-2,2-二甲基-1,2,3,4-四氢喹啉是此处报道的所有香豆素染料的常见前体。比较了新染料(“还原的香豆素”)和具有三取代C = C键的1,2-二氢喹啉类似物(正式前体)的光物理性质。发现“还原的香豆素”比它们的1,2-二氢喹啉具有更高的耐光性和亮度。游离羧酸盐类似物及其抗体结合物(从N还制备了-羟基琥珀酰亚胺酯。所有研究过的具有二抗的缀合物均具有高特异性,适用于荧光显微镜检查。在C-3位带有甜菜碱片段的发红香豆素染料在刺激发