3种新型α1-受体阻断剂的手性流动相HPLC分离与制备

目的建立3种新型α₁-受体阻断剂的手性流动相HPLC分离与半制备方法。方法通过探讨有机相、手性添加剂、流动相的pH、扫尾剂、反相固定相对手性分离的影响,选择最佳的手性分离条件。结果基线分离了3种新型α₁-受体阻断剂对映体,并制备了毫克级样品。结论所建立的分离与制备方法可用于该类新药的手性研究与开发。

Chiral separation and preparation of three new antagonists of alpha 1-adrenoceptors by chiral mobile phase HPLC]

AIM: To establish new methods for the chiral separation and preparation of three new drugs, alfuzosin, terazosin and doxazosin. METHODS: By optimizing factors which affect the chiral separation, modifier of solvent, chiral additive, pH of mobile phase, modifier of organic base and stationary phase, the optimum condition for chiral separation were selected. The preparation of enantiomers was carried out on semi-preparative reverse phase column (7.8 mm x 250 mm C4 5 microns). Acetonitrile-water modified by the addition of carboxymethyl-beta-cyclodextrin (2%-5%, w/v) was applied as chiral mobile phase. RESULTS: The enantiomers of three new drugs were base-line-separated and milligram-scale samples of enantiomer were obtained. CONCLUSION: The newly established method can be used in research and development of the enantiomers of three new drugs.