Substituted azetidine derivatives of formula
in which R1 represents a methyl group substituted by at least one phenyl group; and R2 represents a chlorine or bromine atom or a hydroxy or alkanoyloxy group of up to 6 carbon atoms, processes for their preparation and their use as intermediates for the preparation of azetidine-3-carboxylic acid derivatives.
式中 R1 代表被至少一个苯基取代的甲基;R2 代表
氯原子或
溴原子或最多 6 个碳原子的羟基或烷酰氧基的取代的氮杂
环丁烷衍
生物,其制备方法和用作制备氮杂
环丁烷-3
羧酸衍
生物的中间体的用途。