2-Acylamino-6-Substituted Benzothiazole 誘導體의 合成과 生理生活에 關한 硏究 = Syntheses of 2-Acylamino-6-Substituted Benzothiazole Derivatives and their Biological Activities

다국어 초록 (Multilingual Abstract)

2-Acylamino-6-substituted benzothiazole derivatives from 2-amino-6-substituted benzothiazole and acylchloride were synthesized. The products were identified by elementary analysis, IR and NMR spectra with 2-propionamido-6-chlorobenzothiazole(Ⅰ),
2-propionamido-6-nitrobenzothiazole(Ⅱ), 2-propionamido-6-methylbenzothiazole(Ⅲ), 2-propionamido-6-ethoxybenzothiazole(Ⅸ), 2-propionamido-6-thiocyanatobenzothiazole(Ⅴ), 2-benzamido-6-chlorobenzothiazole(Ⅵ), 2-benzamido-6-nitrobenzothiazole(Ⅶ), 2-benzamido-6-ethylbenzothiazole(Ⅷ), 2-benzamido-6-ethoxybenzothiazole(Ⅸ) and 2-acetamido-6-thiocyanatobenzothiazole(Ⅹ).
These compounds were tested for their phytotoxicity on the germination and the seedling growth of radish, rice plants and turf grass. Among them, 2-propionamido-6-thiocyanatobenzothiazole(Ⅴ) showed an inhibitory activity on the germination and the seedling growth of rice, radish and turf seeds. Most of them, however, had not an inhibitory effect.