[EN] OXAMIDE DERIVATIVES, PREPARATION METHOD THEREFOR AND USE THEREOF IN MEDICINE<br/>[FR] DÉRIVÉS D'OXAMIDE, LEUR PROCÉDÉ DE PRÉPARATION ET LEUR UTILISATION EN MÉDECINE<br/>[ZH] 草酰胺类衍生物、其制备方法及其在医药上的应用
methyl ketones, generated in situ by treatment of 2-isocyanophenyl methyl ketones with sulfur in the presence of a catalytic amount of selenium and excess triethylamine, underwent electrocyclicreaction (ECR) via their enolate forms to give 4-hydroxyquinoline-2(1H)-thiones. The reaction products from ethyl 2-isothiocyanatophenyl ketones generated in situfrom the correspondingisocyanides under similar