Syntheses of D-Labelled Oxidative Metabolites of Acrylamide and Acrylonitrile for the Quantification of Their Toxicities in Humans
作者:Vladimir N. Belov、Sergei M. Korneev、Jürgen Angerer、Armin de Meijere
DOI:10.1002/ejoc.200800291
日期:2008.9
Syntheses of the labelled oxidative metabolites of acrylamide and acrylonitrile – reference compounds for the evaluation of human exposure to important toxicants – are reported. For that, L-cystine tert-butyl ester was acetylated and the product reductively cleaved to L-cysteine tert-butyl ester, which reacted with carbamoyl[D3]oxirane (obtained from [D3]acrylonitrile and 30 % aq. H2O2 at pH = 7.0–7
丙烯酰胺和丙烯腈的标记氧化代谢物(用于评估人类接触重要毒物的参考化合物)的合成报告。为此,L-胱氨酸叔丁酯被乙酰化,产物还原裂解为 L-半胱氨酸叔丁酯,后者与氨基甲酰基 [D3] 环氧乙烷(从 [D3] 丙烯腈和 30% H2O2 水溶液中获得,pH = 7.0–7.5) 并提供 N-乙酰基-S-(2-羟基-2-氨基甲酰基[D3]乙基)半胱氨酸叔丁酯和 N-乙酰基-S-(1-氨基甲酰基-2-)叔丁酯的可分离混合物羟基[D3]乙基)半胱氨酸(约 9:1)。用水溶液去除这些中间体中的叔丁基。HCl 得到含有氨基甲酰基残留物的最终氘代内标物。在 DMF 中用 tBuMe2SiCl/咪唑保护主要中间体中的仲羟基,然后氨基甲酰基脱水(CH2Cl2 中的三氟乙酸酐/吡啶)并逐步去除叔丁基和 tBuMe2Si 保护基团(TFA、Et3SiH、CH2Cl2; aq. HF in MeCN) 产生 N-乙酰