Inhibition of mandelate racemase by the substrate–intermediate–product analogue 1,1-diphenyl-1-hydroxymethylphosphonate
摘要:
Mandelate racemase has been studied as a paradigm for enzyme-catalyzed abstraction of a proton from carbon acids with relatively high pK(a) values. 1,1-Diphenyl-1-hydroxymethylphosphonate is a substrate-intermediate-product analogue and is a modest competitive inhibitor of the enzyme (K-i = 1.41 +/- 0.09 mM), suggesting that simultaneous binding of the two phenyl groups obviates mimicry of the aci-carboxylate function of the intermediate by the phosphonate group. (c) 2005 Elsevier Ltd. All rights reserved.
Abstract A simple, efficient and environmentally benign method for the synthesis of α-hydroxyphosphonates by reaction of an aldehyde or a ketone, and trialkylphosphite is effectively accomplished under ultrasound irradiation and solvent-free and catalyst-free conditions. This rapid method produces α-hydroxyphosphonates in high yields and short reaction times. Graphical Abstract
Synthesis of Quaternary<i>α</i>-Hydroxy Phosphonates<i>via</i>Direct Hydroxylation of Phosphonate Compounds
作者:Jiyan Liu、Wei Wang、Rui Wang、Lijun Gu
DOI:10.1002/cjoc.201400858
日期:2015.5
It was found for the first time that Cs2CO3 serves as highly efficient catalyst for the direct hydroxylation reactions of phosphonates under mild conditions. This reaction provides an efficient approach to quaternary α‐hydroxy phosphonates, which possess intriguing biological activities and are widely used in many areas.
首次发现在温和条件下,Cs 2 CO 3可以用作膦酸酯直接羟基化反应的高效催化剂。该反应提供了一种有效的方法来处理季铵化的α-羟基膦酸酯,其具有令人着迷的生物学活性,并在许多领域得到了广泛的应用。
Solvent-Free Synthesis of Tertiaryα-Hydroxyphosphates by the Triethylamine-Catalyzed Hydrophosphonylation of Ketones
作者:Chubei Wang、Jianwei Zhou、Xingbin Lv、Junlei Wen、Hongwu He
DOI:10.1080/10426507.2013.765874
日期:2013.10.1
A new, environmentally benign, convenient, and easy method of synthesizing tertiary -hydroxyphosphonates by the triethylamine-catalyzed hydrophosphonylation of unactivated ketones was developed. In the presence of triethylamine, aromatic or heteroaromatic ketones can react with phosphite to form tertiary -hydroxyphosphonates under solvent-free and mild conditions. The proposed method was also suitable for functionalized ketones.
An unexpected reactivity of simple heterogeneous mixture of γ-alumina and potassium fluoride : 1-hydroxyalkane phosphonic esters synthesis from non-activated ketones in “dry media”.
作者:Françoise Texier-Boullet、Maryvonne Lequitte
DOI:10.1016/s0040-4039(00)84837-6
日期:1986.1
Shahak,I.; Peretz,J., Israel Journal of Chemistry, 1971, vol. 9, p. 35 - 44