The enantiomers of six phosphoroamidothioate pesticides have been separated by high performance liquid chromatography on a cellulose tris (3,5 dimethyl phenyl carbamate) chiral stationary phase (Chiralcel OD). The inf...The enantiomers of six phosphoroamidothioate pesticides have been separated by high performance liquid chromatography on a cellulose tris (3,5 dimethyl phenyl carbamate) chiral stationary phase (Chiralcel OD). The influence of composition of mobile phase was investigated, and the probable chiral recognition mechanism has been described.展开更多
采用高效液相色谱法在装有大环糖肽抗生素键合相的手性柱上拆分了7种氨基带有芴甲氧羰基(fluo reny l-m ethoxycarbony l,Fm o c)保护的氨基酸对映体。比较了Fm o c-缬氨酸和相应的不带保护基的缬氨酸对映体在不同流动相体系中的色谱保...采用高效液相色谱法在装有大环糖肽抗生素键合相的手性柱上拆分了7种氨基带有芴甲氧羰基(fluo reny l-m ethoxycarbony l,Fm o c)保护的氨基酸对映体。比较了Fm o c-缬氨酸和相应的不带保护基的缬氨酸对映体在不同流动相体系中的色谱保留行为;考察了甲醇-醋酸-三乙胺流动相体系中醋酸和三乙胺的浓度以及它们二者的浓度之比对N-Fm o c氨基酸对映体拆分效果的影响。实验结果表明分离温度及流动相流速的变化也会对分离结果产生影响。该法简便快速,已成功地用于这类氨基酸的光学纯度测定。展开更多
文摘The enantiomers of six phosphoroamidothioate pesticides have been separated by high performance liquid chromatography on a cellulose tris (3,5 dimethyl phenyl carbamate) chiral stationary phase (Chiralcel OD). The influence of composition of mobile phase was investigated, and the probable chiral recognition mechanism has been described.
文摘采用高效液相色谱法在装有大环糖肽抗生素键合相的手性柱上拆分了7种氨基带有芴甲氧羰基(fluo reny l-m ethoxycarbony l,Fm o c)保护的氨基酸对映体。比较了Fm o c-缬氨酸和相应的不带保护基的缬氨酸对映体在不同流动相体系中的色谱保留行为;考察了甲醇-醋酸-三乙胺流动相体系中醋酸和三乙胺的浓度以及它们二者的浓度之比对N-Fm o c氨基酸对映体拆分效果的影响。实验结果表明分离温度及流动相流速的变化也会对分离结果产生影响。该法简便快速,已成功地用于这类氨基酸的光学纯度测定。
