Arylhydroxamic acid bioactivation via acyl group transfer. Structural requirements for transacylating and electrophile-generating activity of N-(2-fluorenyl)hydroxamic acids and related compounds
作者:Heui Mei Yeh、Patrick E. Hanna
DOI:10.1021/jm00349a015
日期:1982.7
The synthesis of a series of 12 N-(2-fluorenyl)hydroxamic acids, N-(2-fluorenyl)-N-hydroxyureas, and N-(2-fluorenyl)-N-hydroxycarbamates is reported. The compounds were evaluated for their ability to serve as substrates for a partially purified hamster hepatic arylhydroxamic acid N,O-acyltransferase preparation. Transacylating activity was measured spectrophotometrically with 4-aminoazobenzene as the
报道了一系列12种N-(2-芴基)异羟肟酸,N-(2-芴基)-N-羟基脲和N-(2-芴基)-N-羟基氨基甲酸酯的合成。评价化合物用作部分纯化的仓鼠肝芳基异羟肟酸N,O-酰基转移酶制剂的底物的能力。用4-氨基偶氮苯作为酰基受体分光光度法测定了酰化活性,并通过N-乙酰甲硫氨酸捕获法定量了亲电试剂的产生活性。如通过任一种测定方法所测量的,仅N-乙酰基,N-丙酰基和N-甲氧基乙酰基衍生物表现出相对较高的活性水平。这些结果通常与先前报道的关于该酶系统活化所需的酰基的空间和电子特性的结论一致。N-羟基-2-乙酰氨基芴对N,O-酰基转移酶的灭活比N-丙酰基或N-甲氧基乙酰基衍生物更大程度地抑制了N-乙酰基化合物的生物活化。