Oblon, Spivak, McClelland, Maier & Neustadt
Optically active compounds
 Optically active compounds having the following formulae (1), (2) or (3) ##STR1## wherein R and R' are C.sub.1-20 alkyl groups; X and Y.sub.1 are --, O, S, or divalent groups such as COO, OOC and OCOO; m is 0 or 1; n is 0 to 5; A.sub.2 is a cyclic group, such as p,p'-biphenylene, 2,6-naphthylene, 2,5-pyrimidinylene-1,4-phenylene, A.sub.1 -Y.sub.2 -pyridylene or A.sub.4 -Y.sub.2 -A.sub.5 ; Y.sub.2 is CH.sub.2 CH.sub.2 or C.tbd.C; A.sub.3 is 2,6-naphthylene, A.sub.1 -Y.sub.2 -pyridylene or A.sub.6 -CH.sub.2 CH.sub.2 -A.sub.7 ; and A.sub.1, A.sub.4, A.sub.5, A.sub.6 and A.sub.7 are cyclic groups, such as 1,4-phenylene and/or 4,4'-biphenylene. 
Sanyo Chemical Industries, Ltd.
C C C C C C C C C C C C C
C07C C07C C07C C09K C07C C07C C07C C09K C09K C07D C09K C09K C09K
inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional
Masahiro Tetsuya Kunikiyo Hiroshi
Satoh Watanabe Yoshio Kishiki