| 摘要 |
The invention relates to 3-alkanoyl- and 3-alkyl derivatives of 16-arylidene estrones of general formula:wherein R= H, R= R= OCH, R= CHCO; or R= H, R= R= OCH, R= CHCO; or R= H, R= R= OCH, R= CHCO; or RR= OCH, R= H, R= CH; or R= H, R= R= OCH, R= CH; or R= H, R= R= OCH, R= CH; or R=H, R= R= OCH, R= CH; or R= H, R= R= OCH, R= CH; or R= R= OCH, R= H, R= CH. The invention further relates to chiral-nematic liquid-crystalline mixture containing nematic matrix and optically active chiral admixture. |
