A preparation method using as an intermediate 6-(halomethyl)-1,2-benzisoxazol-3(2H)-one derivative represented by general formula
wherein R5 is a methyl group that is substituted with one or more optionally substituted phenyl groups, or an optionally substituted oxygen-containing heterocyclic group; X represents a halogen atom, can be used as a method for safely and easily preparing 3-5-[4-(cyclopentyloxy)-2-hydroxybenzoyl]-2-[(3-hydroxy-1,2-benzisoxazol-6-yl)methoxy]phenyl}propionic acid, which is useful as an antirheumatic agent, with a high yield.
一种以通式表示的 6-(卤代甲基)-1,2-苯并
异噁唑-3(2H)-酮衍
生物为中间体的制备方法
其中 R5 是被一个或多个任选取代的苯基或任选取代的含氧杂环基团取代的甲基;X 代表卤素原子,该方法可用于安全、简便地制备 3-5-[4-(环戊基氧基)-2-羟基苯甲酰基]-2-[(3-羟基-1,2-苯并
异噁唑-6-基)甲氧基]苯基}
丙酸,可用作抗风湿剂,且收率高。