The present invention provides a production method of optically active 3-substituted-3-formyl-2-hydroxypropanoic acid compound (4), which includes a step of reacting glyoxylic acid compound (1-1) or (1-2) with aldehyde (2) in the presence of optically active pyrrolidine compound (3);
wherein each symbol is as defined in the specification.
本发明提供了一种光学活性的3-取代-3-甲酰基-2-羟基
丙酸化合物(4)的生产方法,其中包括在光学活性
吡咯烷化合物(3)的存在下,将
乙醛(2)与
乙醛酸化合物(1-1)或(1-2)反应的步骤;其中每个符号如规范中所定义。