生物素蛋白连接酶(BPL)抑制剂是新型抗菌化合物,具有治疗由对目前抗生素具有抗性的细菌引起的感染的潜力。一种新的BPL抑制剂(12,K i 1.4μM)是由生物素乙炔和叠氮基官能化的荧光硝基苯并呋喃类似物通过Cu(I)催化的环加成反应合成的,也通过模板指导的合成方法使用了金黄色葡萄球菌的野生型BPL合成的。基于LC / HRMS的检测与使用突变BPL的先前报告相比提供了更高的灵敏度,并证明了其对其他BPL的适用性。超成像荧光显微镜显示金黄色葡萄球菌细胞质中有12种积累,但没有大肠杆菌。这种新颖的荧光探针可用于获得对金黄色葡萄球菌中BPL抑制剂的摄取,外排和代谢机制的新见解。
生物素蛋白连接酶(BPL)抑制剂是新型抗菌化合物,具有治疗由对目前抗生素具有抗性的细菌引起的感染的潜力。一种新的BPL抑制剂(12,K i 1.4μM)是由生物素乙炔和叠氮基官能化的荧光硝基苯并呋喃类似物通过Cu(I)催化的环加成反应合成的,也通过模板指导的合成方法使用了金黄色葡萄球菌的野生型BPL合成的。基于LC / HRMS的检测与使用突变BPL的先前报告相比提供了更高的灵敏度,并证明了其对其他BPL的适用性。超成像荧光显微镜显示金黄色葡萄球菌细胞质中有12种积累,但没有大肠杆菌。这种新颖的荧光探针可用于获得对金黄色葡萄球菌中BPL抑制剂的摄取,外排和代谢机制的新见解。
High-affinity fluorescent ligands for the 5-HT3 receptor
作者:Jonathan Simonin、Sanjeev Kumar V. Vernekar、Andrew J. Thompson、J. Daniel Hothersall、Christopher N. Connolly、Sarah C.R. Lummis、Martin Lochner
DOI:10.1016/j.bmcl.2011.11.097
日期:2012.1
The synthesis, photophysical and biological characterization of a small library of fluorescent 5-HT3 receptor ligands is described. Several of these novel granisetron conjugates have high quantum yields and show high affinity for the human 5-HT(3)AR. (C) 2011 Elsevier Ltd. All rights reserved.
Identification of fluorogenic and quenched benzoxadiazole reactive chromophores
作者:Jessie A. Key、Christopher W. Cairo
DOI:10.1016/j.dyepig.2010.05.007
日期:2011.1
The Sharpless-Meldal reaction was employed to generate triazole-substituted, alkynyl, azido and tri-azolyl-benzoxadiazole as well as nitro-benzoxadiazole fluorophores Linkage of the triazole to the benzoxadiazole ring at C4 gave chromophores which were fluorogenic, while attachment through NI resulted in quenching The 4-azalo-7-nitrobenzoxadiazole underwent a 470-fold decrease in quantum yield upon conversion to the triazole While, 5-ethynyl-benzoxadiazole exhibited a 48-fold enhancement of quantum yield upon formation of tnazole The modulating effects of solvent polarity, conjugation, and attachment point of the fluorochrome to the tnazole were examined (C) 2010 Elsevier Ltd. All rights reserved.