申请人:University Research Corporation
公开号:US05167855A1
公开(公告)日:1992-12-01
The subject application discloses chiral nonracemic compositions of the general formula: R.sub.1 --(Ar)--O--C*H(CH.sub.3)--C*HX--C*HY--R.sub.2 wherein: R.sub.1 is an achiral tail of two to sixteen carbons; Ar is an achiral FLC core of at least two rings; * denotes a chiral or potentially chiral carbon; X is a halide and Y is H or a halide; R.sub.2 comprises the distal segment of the chiral tail and has one to ten carbon atoms; the --O--C*H(CH.sub.3)--C*HY--C*HY--CH.sub.2 --O-- segment comprises the chiral proximal segment of the chiral tail, and the proximal segment is selected from the diastereomers and enantiomers: 1S-methyl-2S-halo 1S-methyl-2R-halo 1R-methyl-2R,3R-dihalo 1R-methyl-2R,3S-dihalo 1R-methyl-2S,3S-dihalo 1R-methyl-2S,3R-dihalo 1R-methyl-2R-halo 1R-methyl-2S-halo 1S-methyl-2S,3S-dihalo 1S-methyl-2S,3R-dihalo 1S-methyl-2R,3R-dihalo 1S-methyl-2R,3S-dihalo.
该主题应用揭示了一般公式为:R.sub.1 --(Ar)--O--C*H(CH.sub.3)--C*HX--C*HY--R.sub.2 的手性非消旋组合物,其中:R.sub.1 是两到十六个碳的不对称尾部;Ar 是至少有两个环的不对称FLC核心;* 表示手性或潜在手性碳;X 是卤素,Y 是H或卤素;R.sub.2 包括手性尾部的远端段,具有一到十个碳原子;--O--C*H(CH.sub.3)--C*HY--C*HY--CH.sub.2 --O-- 段包括手性尾部的手性近端段,近端段选自对映异构体和对映体:1S-甲基-2S-卤代、1S-甲基-2R-卤代、1R-甲基-2R,3R-双卤代、1R-甲基-2R,3S-双卤代、1R-甲基-2S,3S-双卤代、1R-甲基-2S,3R-双卤代、1R-甲基-2R-卤代、1R-甲基-2S-卤代、1S-甲基-2S,3S-双卤代、1S-甲基-2S,3R-双卤代、1S-甲基-2R,3R-双卤代、1S-甲基-2R,3S-双卤代。