Hydrolysis and Phytotoxic Activity of<i>N</i>-Aryl-3,4,5,6-tetrahydroisophthalimides
作者:Toshinobu Hoshi、Kazuya Koizumi、Yukiharu Sato、Ko Wakabayashi
DOI:10.1271/bbb.57.1913
日期:1993.1
The phytotoxic action of five N-aryl-3,4,5,6-tetrahydroisophthalimides (isoimides) synthesized was studied using green microalga (Scenedesmus acutus) and sawa millet (Echinochloa utilis). Isoimides had the same phytotoxic activity as that of imides and amide-acids. This fact indicates that isoimides are peroxidizing herbicides too. Their phytotoxic activity against E. utilis and S. acutus was studied in relation to conversion of isoimide to imide and/or amide-acid during the bioassay. The isoimides rapidly changed to the amide-acids and imides in cluture solution. The conversion rate depended on structures of their N-aryl residues. The phytotoxicity of isoimides may be mostly due to the corresponding amide-acids and/or imides. However, because the isoimides, N-4-(4-chlorobenzyloxy)phenyl}-3,4,5,6-tetrahydroisophthalimide, which had a bulky p-substituent on N-aryl ring, slowly converted to the corresponding amide-acid and/or imide, this compound may have the intrinsic phytotoxicity of the isoimide itself.
合成的五种N-芳基-3,4,5,6-四氢异苯二甲酰亚胺(异亚胺)对绿色微藻(尖头藻)和米草(禾本科植物)进行的植物毒性作用研究表明,异亚胺的植物毒性活动与亚胺和酰胺酸相同。这一事实表明,异亚胺也是过氧化除草剂。其对米草和尖头藻的植物毒性活动与生物测定过程中异亚胺转化为亚胺和/或酰胺酸的关系进行研究。异亚胺在培养溶液中迅速转变为酰胺酸和亚胺。转化速率取决于其N-芳基残基的结构。异亚胺的植物毒性可能主要归因于相应的酰胺酸和/或亚胺。然而,由于N-4-(4-氯苄氧)苯基}-3,4,5,6-四氢异苯二甲酰亚胺在N-芳基环上具有较大取代基,转化为相应酰胺酸和/或亚胺的速率较慢,因此该化合物可能具有异亚胺本身的内在植物毒性。