1-Methyl-3-(3-methylmercaptoisothiazol-5-yl)urea 、
丙酮醛 在
sodium hydroxide 作用下,
以
乙醇 为溶剂,
生成 (4S,5R)-4,5-Dihydroxy-3,4-dimethyl-1-(3-methylsulfanyl-isothiazol-5-yl)-imidazolidin-2-one 、 (4S,5R)-4,5-Dihydroxy-3,4-dimethyl-1-(3-methylsulfanyl-isothiazol-5-yl)-imidazolidin-2-one