作者:Mui-Chiung Tsai、Yang Sai、Yan Li、George Aislaitner、John W. Gorrod
DOI:10.1002/(sici)1099-1344(199904)42:4<387::aid-jlcr203>3.0.co;2-5
日期:1999.4
whereas the other metabolites were obtained using a cation-exchange HPLC method. This study showed that in addition to the two major metabolites (i.e. cotinine and nornicotine), 4-(3-pyridyl)-4-oxo-butyric acid, 3-hydroxycotinine, norcotinine, nicotine-1′-N-oxide and cotinine-1-N-oxide were also formed when PB-induced rabbit hepatic homogenates were used. Two further metabolites of unknown structure
本研究描述了使用苯巴比妥 (PB) 诱导的兔肝匀浆(10,000 g 部分)形成的主要放射性标记尼古丁代谢物的生物合成和分离。建立了从非标记尼古丁中形成可替宁的最佳孵育和提取方法。[5'-14C] 可替宁和其他放射性标记的代谢物如 [2'-14C] 去甲烟碱和 [4-14C]-(3-吡啶基)-4-氧代丁酸的生物合成和分离,从市售 [2'- 14C]尼古丁,使用开发的方法进行。使用制备型硅胶 TLC 分离可替宁,而使用阳离子交换 HPLC 方法获得其他代谢物。该研究表明,除了两种主要代谢物(即可替宁和降烟碱)外,4-(3-吡啶基)-4-氧代-丁酸、3-羟基可替宁、去甲可替宁、当使用 PB 诱导的兔肝匀浆时,也会形成 nicotine-1'-N-oxide 和 cotinine-1-N-oxide。检测到另外两种结构未知的代谢物。然而,仅对可替宁、降烟碱和4-(3-吡啶基)-4-氧代-丁酸进行分离和进一步纯化。版权所有