Metabolism of Drugs. LI. The Metabolic Fate of Alkylaryl Ethers in Rabbits
作者:Hidetoshi Yoshimura、Hiroshi Tsuji、Hisao Tsukamoto
DOI:10.1248/cpb.14.939
日期:——
Major metabolic pathways of two series of alkylaryl ethers, i.e. 2-alkoxy-5-nitro-anisoles and alkyl p-nitrophenyl ethers, were investigated in vivo with rabbits. It was confirmed that aryl ethers of methyl or ethyl were dealkylated quickly, but of butyl or of isoamyl only with slow rate and metabolized mainly through penultimate hydroxylation pathway. Propylaryl ethers, on the other hand, behaved very differently, producing ω-oxidation product together with dealkylation and penultimate hydroxylation products. Demethylation rate of the methoxyl group attached to the meta position of nitro-substituent in 2-alkoxy-5-nitroanisoles was held nearly constant over a series of compounds.
用兔子进行活体实验研究了两组烷基芳基醚(即2-烷氧基-5-硝基苯甲醚和烷基对硝基苯基醚)的主要代谢途径。研究证实,甲基或乙基的芳基醚快速脱烷基,而丁基或异戊基的芳基醚则代谢缓慢,主要通过倒数第二位羟基化途径进行代谢。另一方面,丙基芳基醚的行为很不一样,同时产生ω-氧化产物、脱烷基产物和倒数第二位羟基化产物。在2-烷氧基-5-硝基苯甲醚系列化合物中,与硝基取代基间位相连的甲氧基的脱甲基速率保持基本恒定。