A compound of formula (8) or a salt thereof:
wherein Z represents a group containing 1-20 carbon atoms and at least one chiral carbon atom and having a single conformation, is useful in the synthesis of pharmaceutical compounds, especially chiral compounds such as levocetirizine.
式(8)的化合物或其盐:
其中Z代表含有1-20个碳原子且至少一个手性碳原子且具有单一构象的基团,在制备药物化合物,特别是手性化合物如
左西替利嗪方面是有用的。