通过香豆素-3-羰基氯(1)与许多亲核试剂的反应已经制备了香豆素-3 N-羧酰胺的几种衍生物(3-21)。还使用相同的方法制备了新型双头香豆素-3 N-羧酰胺(26-33)。应用Pechmann-Duisberg反应制备新的苯并[ f ]-苯并[ h ]香豆素和4-(氯甲基)-吡喃并[3,2 - c ]香豆素-2-酮(36-42)。1-氯甲基苯并[ f ]香豆素的反应(36)还研究了在不同反应条件下与氰化物阴离子形成的阴离子,以评估其对亲核取代反应以及环转化产物的适用性(43-49)。1-((苯并[ d ]噻唑-2-基)甲基)-9-羟基苯并[ f ]香豆素(50)的合成代表了含亚甲基桥头杂环的苯并[ f ]香豆素的第一个实例。一些新制备的香豆素对革兰氏阳性和革兰氏阴性细菌表现出抗菌活性。发现化合物36d对所有经筛选的细菌具有活性。对选定的荧光苯并[ f ]-和苯并[ h ]进行了光物理研究
Oxobenzo[f]benzopyrans as new fluorescent photolabile protecting groups for the carboxylic function
作者:Ana M. Piloto、Daniel Rovira、Susana P.G. Costa、M. Sameiro T. Gonçalves
DOI:10.1016/j.tet.2006.09.085
日期:2006.12
The properties of three oxobenzo[f]benzopyrans as new fluorogenic photolabile protectinggroups for the carboxylic function of amino acids were studied. Fluorescent amino acid conjugates were efficiently prepared and characterised. Photodeprotection of these compounds was carried out by irradiation at 300, 350 and 419 nm, the most suitable wavelength being 350 nm, on account of short irradiation times
研究了三个氧代苯并[ f ]苯并吡喃类作为新的对氨基酸的羧基官能团的光不稳定保护基的性质。荧光氨基酸缀合物得到了有效的制备和表征。这些化合物的光脱保护是通过在300、350和419 nm处进行辐照进行的,最短的辐照时间和良好的脱保护收率是最合适的波长是350 nm。
A naphtho[2,1-b]furan as a new fluorescent label: synthesis and spectral characterisation
作者:Ana M. Piloto、Susana P.G. Costa、M. Sameiro T. Gonçalves
DOI:10.1016/j.tetlet.2005.05.035
日期:2005.7
contraction and coupled with various l-amino acids at their N-terminus or at side-chain functional groups, in order to evaluate its applicability as a fluorescent label for biomolecules and in peptide synthesis. Fluorescence data were collected for all derivatives, which were found to be moderately fluorescent and having moderate to good fluorescence quantum yields.
Carboxylic fused furans for amino acid fluorescent labelling
作者:Ana M. Piloto、Andrea S.C. Fonseca、Susana P.G. Costa、M. Sameiro T. Gonçalves
DOI:10.1016/j.tet.2006.07.003
日期:2006.9
Four carboxylic fused furans are presented as new fluorescent labels for the amino and hydroxyl functions of organic molecules. Various representative L-amino acids were chosen as models, labelled at their N-terminus and also at their side-chain. Fluorescent derivatives were obtained in high yields, and their absorption and emission properties were studied. (c) 2006 Elsevier Ltd. All rights reserved.
Synthesis of novel coumarin and benzocoumarin derivatives and their biological and photophysical studies
作者:Alaa S. Abd-El-Aziz、Hany M. Mohamed、Shawkat Mohammed、Shamsulhaq Zahid、Athar Ata、Ahmed H. Bedair、Ahmed M. El-Agrody、Pierre D. Harvey
DOI:10.1002/jhet.5570440610
日期:2007.11
The reaction of 1-chloromethylbenzo[f]coumarins (36) with cyanide anion under different reaction conditions was also investigated in order to assess its suitability for nucleophilic substitution reactions as well as ring transformation products (43-49). Synthesis of 1-((benzo[d]thiazol-2-yl)methyl)-9-hydroxybenzo[f]coumarin (50) represented the first example of methylene bridge-head heterocyclecontaining
通过香豆素-3-羰基氯(1)与许多亲核试剂的反应已经制备了香豆素-3 N-羧酰胺的几种衍生物(3-21)。还使用相同的方法制备了新型双头香豆素-3 N-羧酰胺(26-33)。应用Pechmann-Duisberg反应制备新的苯并[ f ]-苯并[ h ]香豆素和4-(氯甲基)-吡喃并[3,2 - c ]香豆素-2-酮(36-42)。1-氯甲基苯并[ f ]香豆素的反应(36)还研究了在不同反应条件下与氰化物阴离子形成的阴离子,以评估其对亲核取代反应以及环转化产物的适用性(43-49)。1-((苯并[ d ]噻唑-2-基)甲基)-9-羟基苯并[ f ]香豆素(50)的合成代表了含亚甲基桥头杂环的苯并[ f ]香豆素的第一个实例。一些新制备的香豆素对革兰氏阳性和革兰氏阴性细菌表现出抗菌活性。发现化合物36d对所有经筛选的细菌具有活性。对选定的荧光苯并[ f ]-和苯并[ h ]进行了光物理研究