Herein we describe a straightforward solid-phase synthesis directed towards the preparation of families of asymmetrically disubstituted furazano[3,4-b]pyrazines by stepwise displacement of the two chlorine atoms in 5,6-dichlorofurazano[3,4-b]pyrazine by nucleophiles. This synthesis has avoided selectivity problems found in solution chemistry.
Development of an Enzyme-Linked Immunosorbent Assay for the Organophosphorus Insecticide Bromophos-ethyl
作者:Kwang-Ok Kim、Yoo Jung Kim、Yong Tae Lee、Bruce D. Hammock、Hye-Sung Lee
DOI:10.1021/jf025703+
日期:2002.11.1
assay (ELISA) was developed for the quantitative detection of the organophosphorusinsecticide bromophos-ethyl. Four bromophos-ethyl derivatives (haptens) were synthesized and were coupled to carrier proteins through the pesticide thiophosphate group to use as an immunogen or as a coating antigen. Rabbits were immunized with either one of two haptens coupled to bovine serum albumin for production of polyclonal
开发了一种竞争性酶联免疫吸附测定法(ELISA),用于定量检测有机磷杀虫剂溴代磷酸乙酯。合成了四种溴代磷乙基衍生物(半抗原),并通过农药硫代磷酸酯基团与载体蛋白偶联,用作免疫原或包被抗原。用与牛血清白蛋白偶联的两种半抗原中的任一种免疫兔以产生多克隆抗体,并针对与卵白蛋白偶联的一种半抗原筛选血清。使用滴度最高的血清,开发了一种抗原包被的ELISA,显示的IC(50)为3.9 ng / mL,检出限为0.3 ng / mL(抑制20%)。还开发了使用酶示踪剂的抗体包被的ELISA,显示IC(50)为6.5 ng / mL,检出限为1。0 ng / mL(抑制20%)。该抗体与其他有机磷农药的交叉反应微不足道,仅在抗体包被的检测方法中与杀虫剂溴乙磷和毒死rif有交叉。从强化农作物和水样中回收的溴磷乙基含量分别为82%至128%和95%至127%。
TERTIARY AMINE SUBSTITUTED COUMARIN COMPOUNDS AND USES AS FLUORESCENT LABELS
申请人:Illumina Cambridge Limited
公开号:US20200277670A1
公开(公告)日:2020-09-03
The present application relates to tertiary amine substituted coumarin derivatives and their uses as fluorescent labels. These compounds may be used as fluorescent labels for nucleotides in nucleic acid sequencing applications.
A series of [2-[(omega-aminoalkoxy)phenyl]ethyl]benzene derivatives were synthesized and evaluated for their ability to inhibit collagen-induced platelet aggregation in vitro and to protect experimental thrombosis in mice. The results showed that the compounds were in vitro inhibitors of collagen-induced platelet aggregation. Most of them were also effective in the mouse antithrombotic assay. The compounds