Reactive Intermediate Formation from the 2-(Fluoromethoxy)-1,1,3,3,3-pentafluoro-1-propene (Compound A)-Derived Cysteine <i>S</i>-Conjugate <i>S</i>-[2-(Fluoromethoxy)-1,1,3,3,3-pentafluoropropyl]-<scp>l</scp>-cysteine in Pyridoxal Model Systems
作者:Zeen Tong、M. W. Anders
DOI:10.1021/tx010148b
日期:2002.5.1
degradation product of the anesthetic sevoflurane and undergoes cysteine conjugate beta-lyase-dependent bioactivation to nephrotoxic metabolites in rats. The present experiments were designed to identify reactive intermediates formed from S-[2-(fluoromethoxy)-1,1,3,3,3-pentafluoropropyl]-L-cysteine, a compound A-derived cysteine S-conjugate, in two pyridoxal model systems, namely Cu2+/pyridoxal and N-dodecylpyridoxal
2-(氟甲氧基)-1,1,3,3,3-五氟-1-丙烯(化合物A)是麻醉性七氟醚的降解产物,并在大鼠中经历半胱氨酸共轭β-裂合酶依赖的生物活化作用,以产生肾毒性代谢产物。设计本实验以鉴定在两个吡ido醛中由S- [2-(氟甲氧基)-1,1,3,3,3-五氟丙基] -L-半胱氨酸(化合物A衍生的半胱氨酸S-缀合物)形成的反应性中间体模型系统,即十六烷基三甲基铵胶束中的Cu2 + /吡rid醛和N-十二烷基吡ox醛。在模型系统中,将S- [2-(氟甲氧基)-1,1,3,3,3-五氟丙基] -L-半胱氨酸与苄基溴,五氟苄基溴,苯胺和邻苯二胺作为捕集剂一起孵育。产物通过TLC纯化,并通过19F和1H NMR光谱法以及通过GC / MS鉴定。在没有捕集剂的情况下,形成了2-(氟甲氧基)-3,3,3-三氟丙酸和3,3,3-三氟乳酸,它们是先前在生物转化研究中确定的。在化学模型中,预期的第一中间体2-(氟甲氧基)-1