申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0244143A3
公开(公告)日:1989-05-24
Compounds of the formulae:
wherein R¹, R², R³ and R⁴ have a wide range of values are described as useful intermediates in the preparation of pharmaceuticals, etc, in particular in the preparation of optically active β-hydroxy α-substituted carboxylic acids. Processes for their preparation are described.
式子为:其中R¹,R²,R³和R⁴有广泛的取值范围,被描述为制备药物等有用中间体,特别是在制备光学活性的β-羟基α-取代羧酸时。描述了它们的制备过程。