A compound useful as a constituent of liquid crystal materials for ferroelectric liquid crystal display elements and a liquid crystal composition containing the same are provided, which compound is expressed by the formula
wherein R represents a linear or branched chain alkyl group or alkoxy group each of 1 to 20 carbon atoms, R* represents an optically active group of 3 to 16 carbon atoms and X and Y each represent H or F.
本发明提供了一种可用作
铁电液晶显示元件液晶材料成分的化合物以及含有该化合物的液晶组合物,该化合物由式表示
其中 R 代表 1 至 20 个碳原子的直链或支链烷基或烷氧基,R* 代表 3 至 16 个碳原子的光学活性基团,X 和 Y 分别代表 H 或 F。