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在1-萘万古霉素手性固定相上分离了6种氨基醇类药物的对映体。考察了流动相中的酸、碱添加剂种类和浓度、溶质的化学结构对对映体分离的影响,同时探讨了手性识别机理。结果表明:普萘洛尔、比索洛尔、阿替洛尔、美托洛尔、索他洛尔和沙丁胺醇等6种药物的对映体在1-萘万古霉素手性柱上得到了完全分离,当甲醇流动相中冰乙酸和三乙胺添加剂量均为0.001%(体积分数)时,6种氨基醇的选择因子依次是1.16,1.36,1.15,1.10,1.18,1.16。 相似文献
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Solitary excitations in one-dimensional ferromagnetic spin chains with biquadratic exchange interaction
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By using the traveling wave method, the solutions of the elliptic function wave and the solitary wave are obtained in a ferromagnetic spin chain with a biquadratic exchange interaction, a single ion anisotropic interaction and an anisotropic nearest neighbour interaction. The effects of the biquadratic exchange interaction and the single ion anisotropic interaction on the properties (width, peak and stability) of the soliton are investigated. It is also found that the effects vary with the strengths of these interactions. 相似文献
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