The Enantioselective Metabolism of p-Cymene in Rabbits.
作者:Takashi MATSUMOTO、Takashi ISHIDA、Toshio YOSHIDA、Hiromitsu TERAO、Yoshio TAKEDA、Yoshinori ASAKAWA
DOI:10.1248/cpb.40.1721
日期:——
2-(p-tolyl)-1-propanol (3': R/S = 65:35), 2-(p-tolyl)propanoic acid (5': R/S = 0:100), p-(2-hydroxy-1-methylethyl)benzoic acid (6': R/S = 91:9) and p-(1-carboxyethyl)benzoic acid (8': R/S = 30:70), were isolated in addition to three optically inactive metabolites, 2-(p-tolyl)-2-propanol (2), p-isopropylbenzoic acid (4'), and p-(1-hydroxy-1-methylethyl)benzoic acid (7'). The presumed metabolic pathways of p-cymene
对-ym烯(1)在兔中被代谢,并且以下四种光学活性代谢物:2-(对甲苯基)-1-丙醇(3':R / S = 65:35),2-(对甲苯基)丙酸酸(5':R / S = 0:100),对-(2-羟基-1-甲基乙基)苯甲酸(6':R / S = 91:9)和对-(1-羧乙基)苯甲酸(除3种光学惰性的代谢产物2-(对甲苯基)-2-丙醇(2),对异丙基苯甲酸(4')和对-((8':R / S = 30:70) 1-羟基-1-甲基乙基)苯甲酸(7')。通过施用中间代谢物(2、3',4'和5')证实了兔体内对苯甲基异丙基苯的推测代谢途径。代谢物3'和6'的对映体比率表明1和4'中异丙基的ω-羟基化反应优先发生在pro-S甲基上。在1的新陈代谢中 S-异构体主要在丙酸衍生物中,而R-异构体则富含丙醇衍生物。有趣的是,4'的代谢主要产生相应的丙醇衍生物(6'; R / S = 91:9)和丙酸衍生物(8';