Optically active compounds, liquid crystal compositions comprising said
申请人:Takeda Chemical Industries
公开号:US05269965A1
公开(公告)日:1993-12-14
The invention relates to optically active compounds represented by the general formula ##STR1## wherein R.sub.1, R.sub.2, Q.sub.1, Q.sub.2, Q.sub.3, ##STR2## and M are defined as in the specification, methods and intermediates for their preparation, liquid crystal compositions comprising at least one optically active compound of formula I and their use in electrooptical display, switching and modulation devices.