We have developed a regiospecific method for synthesis of N'-phosphinatodiazene N-oxides, a previously unknown type of azoxy compounds in which the diazene oxide fragment is directly connected with the phosphinate group. The method involves reaction of amidoesters of alkyl- and arylphosphonic acids with nitroso compounds in the presence of dibromoisocyanurate.
Hydrolyse Basique de phosphonates I. Étude qualitative
作者:Henri Christol、Michel̀e Levy、Claude Marty
DOI:10.1016/s0022-328x(00)88699-4
日期:1968.6
The hydrolysis of phosphonates by alkali in aqueousdioxane has been studied. The symmetrical phosphonates are hydrolysed with loss of one ester group to form a monoacid. With the mixed phosphonates the better leaving group is replaced.
syntheses of two series of phosphonylated peptides using Fmoc-protected amino acids. The peptides corresponded to regions containing phosphonylated Ser195 in the active site of butyrylcholinesterase and Tyr411 of human serum albumin. The phosphonylated Fmoc-protected amino acids were used in solid-phase peptide synthesis to prepare the peptides. Fmoc-serine and Fmoc-tyrosine with benzyl ester protection
Chemical and biochemical adducts as biomarkers for organophosphate exposure
申请人:Human BioMolucular Research Institute
公开号:US10711037B2
公开(公告)日:2020-07-14
Provided are methods for identifying OP-adducted biomarkers of OP exposure as well as compounds containing OPs that can provide OP adducts and compounds of Formula 1 for eliciting antibodies that specifically and selectively bind to the OP adducts, wherein the Formula 1 compounds have the structure of OP-Peptide-Linker-CP, wherein CP is a carrier protein, OP represents a structure corresponding to that of a reactive organic phosphorous compound covalently modifying a tyrosine residue hydroxyl group of the peptide of Formula I and the other variable groups are as described herein.
本发明提供了用于鉴定 OP 暴露的 OP 加合物生物标志物的方法以及含有 OP 的化合物,这些化合物可提供 OP 加合物和用于激发特异性和选择性结合 OP 加合物的抗体的式 1 化合物,其中式 1 化合物具有 OP-Peptide-Linker-CP 结构,其中 CP 是载体蛋白,OP 代表与共价修饰式 I 肽的酪氨酸残基羟基的活性有机磷化合物结构相对应的结构,其他可变基团如本文所述。
Phosphylated tyrosine in albumin as a biomarker of exposure to organophosphorus nerve agents
作者:Nichola H. Williams、John M. Harrison、Robert W. Read、Robin M. Black
DOI:10.1007/s00204-007-0191-8
日期:2007.8.3
cyclosarin and tabun phosphylate a tyrosine residue on albumin in human blood. These adducts may offer relatively long-lived biological markers of nerve agent exposure that do not 'age' rapidly, and which are not degraded by therapy with oximes. Sensitive methods for the detection of these adducts have been developed using liquid chromatography-tandem mass spectrometry. Adducts of all four nerve agents were detected in the blood of exposed guinea pigs being used in studies to improve medical countermeasures. The tyrosine adducts with soman and tabun were detected in guinea pigs receiving therapy 7 days following subcutaneous administration of five times the LD50 dose of the respective nerve agent. VX also forms a tyrosine adduct in human blood in vitro but only at high concentrations.
Phosphorylation of Tyrosine and Tyr-Thr-Lys Tripeptide with Cyclohexylmethyl- and (Deuteromethyl)phosphonochloridates
作者:I. A. Rodin、T. M. Baygildiev、V. I. Krylov、V. N. Osipov、I. I. Krylov、V. A. Yashkir、I. V. Rybalchenko
DOI:10.1134/s1070363220040106
日期:2020.4
Methods for phosphorylation of tyrosine and Tyr-Thr-Lys tripeptide with cyclohexylmethyl(deuteromethyl)phosphonochloridates have been developed. These products can be used as reference compounds in the analysis of blood plasma of patients presumably exposed to cyclohexylmethylphosphonofluoridate (cyclosarin) action. Conditions for the separation and purification of the synthesized intermediates by means of chromatography have been determined and optimized, allowing high-purity phosphorylated products at the final stage of the synthesis.