Microbial metabolism of N-methylcarbamate insecticide. I. Metabolism of o-sec-butylphenyl N-methylcarbamate by Aspergillus niger van Tieghem.
作者:TAKASHI SUZUKI、MITSUHARU TAKEDA
DOI:10.1248/cpb.24.1967
日期:——
In order to understand the metabolic fate of N-methylcarbamate in soil, the metabolism of o-sec-butylphenyl N-methylcarbamate (BPMC) (I) in a fungus, Aspergillus niger van Tieghem, was investigated. The following ten metabolites were detected in addition to unchanged BPMC ; o-sec-butylphenol (M-1), o-sec-butylphenylcarbamate (M-2), o-(1-methylacetonyl) phenyl N-methylcarbamate (M-3), o-sec-butylphenyl N-hydroxymethylcarbamate (M-4), o-(1-hydroxy-1-methylpropyl) phenyl N-methylcarbamate (M-5), threo-o-(2-hydroxy-1-methylpropyl) phenyl N-methylcarbamate (M-6), erythro-o-(2-hydroxy-1-methylpropyl) phenyl N-methylcarbamate (M-7), o-(1-hydroxymethylpropyl) phenyl N-methylcarbamate (M-8), o-(3-hydroxy-1-methylpropyl) phenyl N-methylcarbamate (M-9) and one unidentified product (UK-1). Both thin-layer chromatography (TLC) and gas-liquid chromatography (GLC) were used for detection and isolation of these metabolites, and the structures of these materials were characterized by ultraviolet, infrared, nuclear magnetic resonance and mass spectral analyses. Some major metabolites were identified by comparison of their chemical and physicochemical properties with those of synthesized materials.
为了了解 N-甲基氨基甲酸乙酯在土壤中的代谢去向,研究人员调查了邻仲丁基苯基 N-甲基氨基甲酸乙酯(BPMC)(I)在真菌黑曲霉(Aspergillus niger van Tieghem)中的代谢情况。除了未发生变化的 BPMC 外,还检测到了以下十种代谢物;邻仲丁基苯酚(M-1)、邻仲丁基苯基氨基甲酸酯(M-2)、邻(1-甲基丙酮基)苯基 N-甲基氨基甲酸酯(M-3)、邻仲丁基苯基 N-羟甲基氨基甲酸酯(M-4)、邻-(1-羟基-1-甲基丙基)苯基 N-甲基氨基甲酸酯(M-5)、邻-(2-羟基-1-甲基丙基)苯基 N-甲基氨基甲酸酯(M-6)、(2-羟基-1-甲基丙基) 苯基 N-甲基氨基甲酸酯 (M-7)、邻-(1-羟甲基丙基) 苯基 N-甲基氨基甲酸酯 (M-8)、邻-(3-羟基-1-甲基丙基) 苯基 N-甲基氨基甲酸酯 (M-9) 和一种不明产物 (UK-1)。采用薄层色谱法(TLC)和气液色谱法(GLC)对这些代谢物进行了检测和分离,并通过紫外、红外、核磁共振和质谱分析对这些物质的结构进行了鉴定。通过与合成材料的化学和理化性质进行比较,确定了一些主要的代谢物。