OPTICALLY ACTIVE ISOSORBIDE DERIVATIVE AND OPTICALLY ACTIVE ISOMANNIDE DERIVATIVE, PRODUCTION METHODS THEREOF, PHOTO-REACTIVE CHIRAL AGENT, LIQUID CRYSTAL COMPOSITION, LIQUID CRYSTAL COLOR FILTER, OPTICAL FILM AND RECORDING MEDIUM, METHOD FOR CHANGING HELICAL STRUCTURE OF LIQUID CRYSTAL AND METHOD FOR FIXING HELICAL STRUCTURE OF LIQUID CRYSTAL

The invention relates to an optically active isosorbide derivative represented by general formula (I) and an optically active isomannide derivative represented by general formula (V), ##STR1##

• wherein R¹ and R⁹ each independently represent an alkyl group, an alkenyl group, an aryl group, a heterocyclic group, an alkoxy group, an aryloxy group or NR¹⁷R¹⁸, wherein R¹⁷ and R¹⁸ each independently represent a hydrogen atom, an alkyl group or an aryl group; R² and R¹⁰ each independently represent a hydrogen atom, an alkyl group or an aryl group; R³ to R⁶ and R¹¹ to R¹⁴ each independently represent a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group; R⁷, R¹⁵, R⁸ and R¹⁶ each independently represent a hydrogen atom or an alkyl group; and R² and R⁴, and R¹⁰ and R¹² may in each combination be combined with each other to form a 5- or 6-membered ring.