α,α-二氟-苄基膦酸酯是目前最受欢迎的磷酸酪氨酸模拟物。从结构上衍生自天然底物磷酸酪氨酸,它们构成了经典的生物等排体,使蛋白质酪氨酸磷酸酶(PTP)和磷酸酪氨酸识别位点(例如SH2域)的有效抑制剂得以开发。然而,膦酸酯是带有两个负电荷的二价阴离子,它不会渗透到膜上,因此在细胞中通常是无活性的,因此尚未成为治疗的成功起点。在这项工作中,通过将磷结合的氧原子替换为磷结合的氟原子,对膦酸苄酯进行了修饰。出人意料的是,单P氟代膦酸酯在生理条件下是完全稳定的,因此可以研究其对PTP的作用方式。三种替代方案进行了测试和单- P -fluorophosphonates被确定为稳定的可逆PTP1B抑制剂,尽管一个负电荷的损失和替换一个氧原子的由氟的H键供体。在扩展该替换策略,α,α-二氟苄基五- P -fluorophosphates被合成并发现与对PTP1B的磷酸酪氨酸结合位点提高的亲和力新颖磷酸酪氨酸模拟物。
Pd-catalyzed carbonylative access to aroyl phosphonates from (hetero)aryl bromides
作者:Zhong Lian、Hongfei Yin、Stig D. Friis、Troels Skrydstrup
DOI:10.1039/c5cc02085a
日期:——
This first carbonylative coupling employing a phosphorus-based nucleophile provides easy and safe access to acyl phosphonates under mild conditions.
这种首次使用磷基亲核试剂的羰基化偶联反应在温和条件下提供了对酰基膦酸酯的简便安全访问。
Direct C–H difluoromethylenephosphonation of arenes and heteroarenes with bromodifluoromethyl phosphonate via visible-light photocatalysis
作者:Lin Wang、Xiao-Jing Wei、Wen-Long Lei、Han Chen、Li-Zhu Wu、Qiang Liu
DOI:10.1039/c4cc07925f
日期:——
difluoromethylenephosphonation of arenes and heteroarenes. Using commercially available diethyl bromodifluoromethyl phosphonate as a precursor of difluoromethyl radical, fac-Ir(ppy)3 as a photosensitizer and a 3 W blue LED as a light source, an array of aromatic compounds containing difluoromethylenephosphonyl groups were prepared directly from the corresponding arenes and heteroarenes in excellent to moderate yields
Copper-Mediated Introduction of the CF<sub>2</sub>
PO(OEt)<sub>2</sub>
Motif: Scope and Limitations
作者:Maria V. Ivanova、Alexandre Bayle、Tatiana Besset、Xavier Pannecoucke、Thomas Poisson
DOI:10.1002/chem.201703542
日期:2017.12.6
can be functionalised. The procedure allows the conversion of aryldiazoniumsalts, as well as aryl, heteroaryl, vinyl and alkynyl iodonium salts, into the corresponding fluorinated molecules at room temperature. Mechanistic studies were performed to gain a better understanding of the reaction pathway. Under similar conditions, vinyl and aryl iodides, allyl halides, and benzyl bromides were also functionalised
Cuprous chloride promoted coupling reaction of diethoxyphosphinyldifluoromethylcadmium reagent with aryl iodides: A practical and convenient preparation of α,α-difluoro benzylic phosphonates
作者:Weiming Qiu、Donald J. Burton
DOI:10.1016/j.jfluchem.2013.04.008
日期:2013.11
cross couplingreaction of diethoxyphosphinyldifluoromethylcadmium reagent with aryl iodides was promoted by CuCl under mild conditions to give α,α-difluorobenzylicphosphonates in good yields. A variety of functional groups, including halides, phosphonate, nitro, ketone, carboxylic acid and ester in aryl iodides, could be tolerated. This methodology has been successfully applied to prepare α,α-difluoro
Synthesis of aryl(difluoromethylenephosphonates) via electrophilic fluorination of α-carbanions of benzylic phosphonates with N-fluorobenzenesulfonimide
作者:Scott D. Taylor、Christopher C. Kotoris、A.Nicole Dinaut、Mei-Jin Chen
DOI:10.1016/s0040-4020(97)10395-7
日期:1998.2
The electrophilic fluorination of a wide variety of benzylic phosphonates with N-fluorobenzenesulfonimide has been examined. The fluorination reaction proceeds well in the presence of an array of functional groups such as nitro, bromo, ketone, ester, phenyl and ether groups. Phenyl and biphenyl derivatives containing two α,α-difluoromethylenephosphonate groups can also be prepared. This procedure is