The paper from the angle of conformational analysis explains the experimental result of the reaction of pinacol rearrangements of cyclohexan_diol reasonably which is caused by the cis and trans isomer of 1 cyclohexan_diol .

本文从构象分析角度合理解释了1二甲基1环已二醇顺、 反 异构体发生 Pinacol重排反应的实验结果。

According to the coupling constant of the 1H NMR it is show that the ligands are the trans isomer .

根据核磁图谱的耦合常数表明了配体是一个 反 式 构象。

RESULTS The target compounds were prepared in high yields . Trans isomer ZX-5 released significant amount of NO and specifically increased the choroidal blood flow while cis isomer ZX-4 did not show these activities .

结果以高收率获得了目标化合物，发现 反 式 异构 体ZX-5能促进细胞NO的释放，选择性增加脉络膜血流，而顺式异构体ZX-4无此药理作用。

In alkaline condition the carboxyl group can coordinate with Os and the coordinating species have trans and cis isomers and the trans isomer can convert to cis with time ;

在碱性条件下，羧基与探针的配位出现顺反两种 异构体，随着时间的进行， 反 式会逐渐向顺式转变。

By means of concentration and crystallization an overall yield of more than 38 percent of pure trans isomer ( 93 % ) can be obtained from equilibrium products .

平衡产物经浓缩结晶，可获得以 固体原料 计38%以上的较纯（93%） 反 式 异构 体。