Evaluating
<i>N</i>
‐difluoromethyltriazolium triflate as a precursor for the synthesis of high molar activity [
<sup>18</sup>
F]fluoroform
作者:Anna Pees、Maria J. W. D. Vosjan、Jin Young Chai、Hyojin Cha、Dae Yoon Chi、Albert D. Windhorst、Danielle J. Vugts
DOI:10.1002/jlcr.3939
日期:2021.10
active compounds and therefore of great interest for the labeling with the positron emitter fluorine-18 for positron emission tomography (PET) imaging. Multiple labeling strategies have been explored in the past; however, most of them suffer from low molaractivity due to precursor degradation. In this study, the potential of 1-(difluoromethyl)-3-methyl-4-phenyl-1H-1,2,3-triazol-3-ium triflate as precursor
三氟甲基是生物活性化合物中的一个突出基序,因此对于用于正电子发射断层扫描 (PET) 成像的正电子发射体氟 18 进行标记具有很大的意义。过去已经探索了多种标签策略;然而,它们中的大多数由于前体降解而摩尔活性较低。在本研究中,1-(二氟甲基)-3-甲基-4-苯基-1 H -1,2,3-三唑-3-三氟甲磺酸盐作为合成[ 18 F]三氟甲基化结构单元的前体的潜力研究了具有高摩尔活性的[ 18 F]氟仿。三唑鎓前体在各种条件下与[ 18 F]氟化物反应,提供[ 18 F]氟仿,其放射化学产率(RCY)和摩尔活度( A m )与现有方法相当甚至优于现有方法。在 Neptis® 执行模块上的自动化程序中观察到最高摩尔活性( A m = 153 ± 14 GBq/μmol,dc,EOS)。由于其在[ 18 F]氟仿合成中易于处理且具有良好的RCY和A m ,三唑鎓前体是已知前体的有价值的替代品。
[EN] PROCESS FOR THE CYCLOADDITION OF A HALOGENATED 1,3-DIPOLE COMPOUND WITH A (HETERO)CYCLOALKYNE<br/>[FR] PROCÉDÉ DE CYCLOADDITION D'UN COMPOSÉ 1,3-DIPPOLE HALOGÉNÉ AVEC UN (HÉTÉRO)CYCLOALKYNE
申请人:SYNAFFIX BV
公开号:WO2015112016A1
公开(公告)日:2015-07-30
The present invention relates to a cycloaddition process comprising the step of reacting a halogenated aliphatic 1,3-dipole compound with a (hetero)cycloalkyne according to Formula (1): Preferably, the (hetero)cycloalkyne according to Formula (1) is a (hetero)cyclooctyne. The invention also relates to the cycloaddition products obtainable by the process according to the invention. The invention further relates to halogenated aliphatic 1,3- dipole compounds, in particular tohalogenated aliphatic 1,3-dipole compounds comprising N-acetylgalactosamine-UDP (GalNAc-UDP),and to halogenated 1,3- dipole compounds comprising (peracylated) N-acetylglucosamine(GlcNAc), N- acetylgalactosamine(GalNAc), N-acetylmannosamine(ManNAc)and N- acetylneuraminic acid(NeuNAc).
[EN] 6-AMINO-QUINOLINE-3-CARBONITRILS AS COT MODULATORS<br/>[FR] 6-AMINO-QUINOLINE-3-CARBONITRILES UTILISÉS COMME MODULATEURS DE LA KINASE COT
申请人:GILEAD SCIENCES INC
公开号:WO2017007694A1
公开(公告)日:2017-01-12
The present disclosure relates generally to modulators of Cot (cancer Osaka thyroid) and methods of use and manufacture thereof.
本公开涉及一般与Cot(癌症大阪甲状腺)的调节剂以及其使用和制造方法。
[EN] COT MODULATORS AND METHODS OF USE THEREOF<br/>[FR] MODULATEURS DE COT ET PROCÉDÉS D'UTILISATION ASSOCIÉS
申请人:GILEAD SCIENCES INC
公开号:WO2017007689A1
公开(公告)日:2017-01-12
The present disclosure relates generally to modulators of Cot (cancer Osaka thyroid) and methods of use and manufacture thereof.
本公开涉及通常与Cot(大阪甲状腺癌)调节剂及其使用和制造方法。
A Bioorthogonal Quadricyclane Ligation
作者:Ellen M. Sletten、Carolyn R. Bertozzi
DOI:10.1021/ja2072934
日期:2011.11.9
the bioorthogonal chemistry compendium can advance biological research by enabling multiplexed analysis of biomolecules in complex systems. Here we introduce the quadricyclane ligation, a new bioorthogonal reaction between the highly strained hydrocarbon quadricyclane and Ni bis(dithiolene) reagents. This reaction has a second-order rate constant of 0.25 M–1 s–1, on par with fastbioorthogonal reactions
生物正交化学纲要的新增内容可以通过对复杂系统中的生物分子进行多重分析来推进生物学研究。在这里,我们介绍了四环烷连接,这是一种高度紧张的烃四环烷和 Ni 双(二硫烯)试剂之间的新生物正交反应。该反应的二级速率常数为 0.25 M-1 s-1,与叠氮化物的快速生物正交反应相当,并且在水性环境中很容易进行。Ni 双(二硫烯)探针选择性标记四环烷修饰的牛血清白蛋白,即使存在细胞裂解物也是如此。我们已经证明四环烷连接与,并正交于,通过在差异功能化的蛋白质底物上在一锅中进行所有三个反应,菌株促进叠氮化物-炔烃环加成和肟连接化学。四环烷连接加入了一个小但不断增长的工具列表,用于生物分子的选择性共价修饰。