Specificity of Esterases and Structure of Prodrug Esters: Reactivity of Various Acylated Acetaminophen Compounds and Acetylaminobenzoated Compounds
作者:Hiromitsu Seki、Takeo Kawaguchi、Takeru Higuchi
DOI:10.1002/jps.2600771009
日期:1988.10
catalyzed hydrolysis of various esters of p-acetylaminobenzoic acid (APAB) and variously acylated acetaminophen (APAP) derivatives were measured. Neutral, anionic, and cationic esters were examined. The enzyme sources adopted were rat intestinal homogenate, rat liver homogenate, rat plasma, and a partly purified commercial enzyme. In both APAB and APAP esters, neutral esters were the most sensitive
测量了对乙酰氨基苯甲酸的各种酯(APAB)和各种酰化的对乙酰氨基酚(APAP)衍生物的酶催化水解的相对速率。检查了中性,阴离子和阳离子酯。所采用的酶来源是大鼠肠匀浆,大鼠肝匀浆,大鼠血浆和部分纯化的商业酶。在APAB和APAP酯中,中性酯是所检查酶中最敏感的酶,其敏感性归因于碳链长度。APAB酯在酶学上比APAP酯稳定。这些酯的相对水解速率取决于酶的来源。在大鼠肠匀浆中,结构识别能力良好,但在大鼠血浆中则较弱。