代谢
对N-亚硝基-N-苯基羟基胺铵盐(铜铁龙)的O-烷基化进行了研究,用于合成新型一氧化氮(NO)释放剂。烷基化在端氧上区域选择性地发生,导致单一产物N-(烷氧基)-N'-苯基二亚胺N'-氧化物,这一点由NMR和X射线分析所证实。与它们的母化合物铜铁龙相比,O-烷基衍生物显示出显著提高的稳定性。证明了铜铁龙O-烷基衍生物可以作为光释NO的供体化合物。合成了N-(N"-乙酰苯丙氨甲基氧基)-N'-苯基二亚胺N'-氧化物作为模型NO前药,其中铜铁龙部分通过乙缩醛基团与氨基酸相连,通过增加pH或通过蛋白酶催化的水解来实现控制NO的释放。
O-Alkylation of N-nitroso-N-phenylhydroxylamine ammonium salt (cupferron) was studied for the synthesis of novel nitric oxide (NO) releasing agents. The alkylation occurred regioselectively at the terminal oxygen, leading to a single product N-(alkyloxy)-N'-phenyldiimide N'-oxide as indicated by NMR and X-ray analysis. The O-alkyl derivatives exhibited significantly improved stability compared to their parent compound, cupferron. It was demonstrated that the cupferron O-alkyl derivatives could function as photoreleasing NO donor compounds. N-(N"-acetylphenylalanylmethylenyloxy)-N'-phenyldiimide N'-oxide), which linked the cupferron portion with an amino acid via an acetal moiety, was synthesized as an model NO prodrug where controlled NO release would occur either by increasing pH or by a protease-catalyzed hydrolysis.
来源:Hazardous Substances Data Bank (HSDB)