Novel bisphosphonate cyclic acetal compounds are disclosed, as well as methods of preparing the compounds, pharmaceutical compositions including the compounds, and administration of the compounds in methods of treating bone metabolism disorders, such as abnormal calcium and phosphate metabolism.
Novel ferroelectric liquid crystals exhibiting a chiral smectic C phase and liquid crystal compositions containing the same are provided, which liquid crystals are substituted biphenyl esters expressed by the general formula ##STR1## wherein R.sub.1 * represents an optically active alkyl group of 4 to 18 carbon atoms; ##STR2## represents ##STR3## or ##STR4## Z represents R.sub.2, R.sub.2 CO or R.sub.2 COO wherein R.sub.2 represents an alkyl group or an alkoxy group each of 1 to 18 carbon atoms; and X and Y each represent hydrogen atom (H), bromine atom (Br), chlorine atom (Cl), fluorine atom (F) or cyano group (CN), and either one of X or Y is always hydrogen atom.
Liquid-crystalline carbonic acid esters and liquid crystal compositions
申请人:Chisso Corporation
公开号:US04647398A1
公开(公告)日:1987-03-03
Novel chiral smectic ester compounds suitable for a display mode utilizing ferroelectric liquid crystals, and liquid crystal compositions containing the same are provided, which compounds are expressed by the formula ##STR1## wherein R represents an alkyl group of 1 to 18 carbon atoms; R* represents an optically active alkyl group of 4 to 18 carbon atoms; X represents either one of a single bond, --O-- ##STR2## A represents ##STR3## and m and n each is 1 or 2.
Novel bisphosphonate cyclic acetal compounds are disclosed, as well as methods of preparing the compounds, pharmaceutical compositions including the compounds, and administration of the compounds in methods of treating bone metabolism disorders, such as abnormal calcium and phosphate metabolism.
Liquid crystalline carbonic acid esters and liquid crystal compositions containing them
申请人:Chisso Corporation
公开号:EP0152217A2
公开(公告)日:1985-08-21
Novel chiral smectic ester compounds suitable for liquid crystal compositions are expressed by the formula
wherein R represents an alkyl group of 1 to 18 carbon atoms; R* represents an optically active alkyl group of 4 to 18 carbon atoms: X represents a single bond, -0- , -CO-O- , -0-CO- or -O-CO-O-- ; A represents -CO-0- or -0-CO- ; and m and n each is 1 or 2.