CN112595788A - 一种分离(R)、(S)-1-(α-萘基)缩水甘油基醚的高效液相色谱方法 - Google Patents
一种分离(R)、(S)-1-(α-萘基)缩水甘油基醚的高效液相色谱方法 Download PDFInfo
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Abstract
本发明公开了一种分离(R)、(S)‑1‑(α‑萘基)缩水甘油基醚的高效液相色谱方法。(R)、(S)‑1‑(α‑萘基)缩水甘油基醚是合成萘哌地尔和普萘洛尔等β‑受体阻断剂的重要中间体,广泛用于医药和化工领域,但是二者分离难度较大。本发明方法基于便宜的碳十八色谱柱为分离手段,可以在较短的分析时间内(<30min)有效将(R)‑1‑(α‑萘基)缩水甘油基醚和(S)‑1‑(α‑萘基)缩水甘油基醚分离开,大大降低了(R)、(S)‑1‑(α‑萘基)缩水甘油基醚的分离成本。
Description
技术领域
本发明属于药物分析领域,具体涉及一种分离(R)、(S)-1-(α-萘基)缩水甘油基醚的高效液相色谱方法。
背景技术
1-(α-萘基)缩水甘油基醚是合成萘哌地尔和普萘洛尔等β-受体阻断剂的重要中间体,广泛用于医药和化工领域(萘哌地尔对映异构体的合成工艺优化,广东药科大学学报,2019)。
1-(α-萘基)缩水甘油基醚存在一个手性中心,存在一对对映异构体,即:(R)-1-(α-萘基)缩水甘油基醚、(S)-1-(α-萘基)缩水甘油基醚,化学结构分别如下所示:
(R)-1-(α-萘基)缩水甘油基醚
(S)-1-(α-萘基)缩水甘油基醚。
合成不同构型的目标产物时,所需要的1-(α-萘基)缩水甘油基醚的构型也不同。为了控制目标产物的纯度,有必要控制好中间体1-(α-萘基)缩水甘油基醚的纯度。因此,有必要建立能够将(R)-1-(α-萘基)缩水甘油基醚、(S)-1-(α-萘基)缩水甘油基醚分离的分析方法。
目前,对于这种对映异构体的分离通常借助于手性色谱柱。但是,手性色谱柱的制造成本、销售价格均较高,而且使用寿命比常规的碳十八色谱柱短很多。
为了开发一种低成本分离(R)、(S)-1-(α-萘基)缩水甘油基醚的色谱方法,特提出本发明。
发明内容
本发明旨在克服现有技术的不足,提供一种分离(R)、(S)-1-(α-萘基)缩水甘油基醚的高效液相色谱方法。
本发明目的通过下面的技术方案实现:
一种分离(R)、(S)-1-(α-萘基)缩水甘油基醚的高效液相色谱方法,在流动相中添加适量手性添加剂,所述手性添加剂为N,N'-双(叔丁氧羰基)-L-胱氨酸。
优选地,流动相A相为含0.05mol/LN,N'-双(叔丁氧羰基)-L-胱氨酸的10%四氢呋喃水溶液,流动相B相为乙腈与四氢呋喃按体积比5:1形成的混合有机溶剂,A相和B相按照体积比42:58等度洗脱。
优选地,分离色谱柱采用Waters XBridge C18色谱柱(4.6mm×150mm,5μm)。
优选地,分离温度为30℃。
优选地,检测波长为275nm。
有益效果:
本发明方法基于便宜的碳十八色谱柱为分离手段,可以在较短的分析时间内(<30min)有效将(R)-1-(α-萘基)缩水甘油基醚和(S)-1-(α-萘基)缩水甘油基醚分离开,大大降低了(R)、(S)-1-(α-萘基)缩水甘油基醚的分离成本。
附图说明
图1为(R)-1-(α-萘基)缩水甘油基醚和(S)-1-(α-萘基)缩水甘油基醚的结构式。
图2为实施例1条件的HPLC色谱图。
图3为实施例2条件的HPLC色谱图。
具体实施方式
以下实施例是为了具体本发明的实质性技术内容,不能以下述实施例记载的具体常规细节限定本发明的保护范围。
实施例1:
一、仪器与试药
1、仪器
美国Agilent公司1260液相色谱仪(真空脱气机、二元泵、自动进样器)。
色谱柱:Waters XBridge C18色谱柱(4.6mm×150mm,5μm)。
Mettler toledo电子天平(XS105)。
2、试剂
(R)-1-(α-萘基)缩水甘油基醚对照品、(S)-1-(α-萘基)缩水甘油基醚对照品的纯度均不低于99%,结构式如图1所示。
手性添加剂N,N'-双(叔丁氧羰基)-L-胱氨酸购自麦克林试剂,纯度98%。
乙腈、四氢呋喃为色谱纯,水为超纯水。
二、方法和结果
1、色谱条件
色谱柱:Waters XBridge C18色谱柱(4.6mm×150mm,5μm);
流动相A相:含0.05mol/LN,N'-双(叔丁氧羰基)-L-胱氨酸的10%四氢呋喃水溶液(配制方法:先将四氢呋喃与水按照体积比1:9混合均匀,再加入手性添加剂配制成所需浓度);
流动相B相:乙腈与四氢呋喃按体积比5:1形成的混合有机溶剂;
洗脱模式和比例:A相和B相按照体积比42:58等度洗脱;
流速:1.0mL/min;
检测波长:275nm;
柱温:30℃;
进样量:10μL。
2、溶液配制
混合对照品溶液:取适量流动相A相和B相,按照体积比42:58混合作为溶剂,配制成含有0.6mg/mL(R)-1-(α-萘基)缩水甘油基醚对照品、0.6mg/mL(S)-1-(α-萘基)缩水甘油基醚对照品的混合对照品溶液。
(R)-1-(α-萘基)缩水甘油基醚对照品溶液:取适量流动相A相和B相,按照体积比42:58混合作为溶剂,配制成含有0.1mg/mL(R)-1-(α-萘基)缩水甘油基醚对照品的溶液。
(S)-1-(α-萘基)缩水甘油基醚对照品溶液:取适量流动相A相和B相,按照体积比42:58混合作为溶剂,配制成含有0.1mg/mL(S)-1-(α-萘基)缩水甘油基醚对照品的溶液。
3、进样分析
分别精密量取10μL混合对照品溶液、(R)-1-(α-萘基)缩水甘油基醚对照品溶液、(S)-1-(α-萘基)缩水甘油基醚对照品溶液注入液相色谱仪,按照上述色谱条件分析,记录色谱图。结果如图2所示,在该色谱条件下,(R)-1-(α-萘基)缩水甘油基醚与(S)-1-(α-萘基)缩水甘油基醚可以达到基线分离。
实施例2:对比实施例,流动相不添加手性添加剂
一、仪器与试药
1、仪器
美国Agilent公司1260液相色谱仪(真空脱气机、二元泵、自动进样器)。
色谱柱:Waters XBridge C18色谱柱(4.6mm×150mm,5μm)。
Mettler toledo电子天平(XS105)。
2、试剂
(R)-1-(α-萘基)缩水甘油基醚对照品、(S)-1-(α-萘基)缩水甘油基醚对照品的纯度均不低于99%,结构式如图1所示。
乙腈、四氢呋喃为色谱纯,水为超纯水。
二、方法和结果
1、色谱条件
色谱柱:Waters XBridge C18色谱柱(4.6mm×150mm,5μm);
流动相A相:10%四氢呋喃水溶液(配制方法:将四氢呋喃与水按照体积比1:9混合);
流动相B相:乙腈与四氢呋喃按体积比5:1形成的混合有机溶剂;
洗脱模式和比例:A相和B相按照体积比42:58等度洗脱;
流速:1.0mL/min;
检测波长:275nm;
柱温:30℃;
进样量:10μL。
2、溶液配制
混合对照品溶液:取适量流动相A相和B相,按照体积比42:58混合作为溶剂,配制成含有0.6mg/mL(R)-1-(α-萘基)缩水甘油基醚对照品、0.6mg/mL(S)-1-(α-萘基)缩水甘油基醚对照品的混合对照品溶液。
(R)-1-(α-萘基)缩水甘油基醚对照品溶液:取适量流动相A相和B相,按照体积比42:58混合作为溶剂,配制成含有0.1mg/mL(R)-1-(α-萘基)缩水甘油基醚对照品的溶液。
(S)-1-(α-萘基)缩水甘油基醚对照品溶液:取适量流动相A相和B相,按照体积比42:58混合作为溶剂,配制成含有0.1mg/mL(S)-1-(α-萘基)缩水甘油基醚对照品的溶液。
3、进样分析
分别精密量取10μL混合对照品溶液、(R)-1-(α-萘基)缩水甘油基醚对照品溶液、(S)-1-(α-萘基)缩水甘油基醚对照品溶液注入液相色谱仪,按照上述色谱条件分析,记录色谱图。结果如图3所示,在该色谱条件下,(R)-1-(α-萘基)缩水甘油基醚与(S)-1-(α-萘基)缩水甘油基醚共同洗脱出峰,不能有效分离。
综上可见,本发明方法基于便宜的碳十八色谱柱为分离手段,可以在较短的分析时间内(<30min)有效将(R)-1-(α-萘基)缩水甘油基醚和(S)-1-(α-萘基)缩水甘油基醚分离开,大大降低了(R)、(S)-1-(α-萘基)缩水甘油基醚的分离成本。
上述实施例是为了具体本发明的实质性技术内容,不能以上述实施例记载的具体常规细节限定本发明的保护范围。
Claims (5)
1.一种分离(R)、(S)-1-(α-萘基)缩水甘油基醚的高效液相色谱方法,其特征在于:在流动相中添加适量手性添加剂,所述手性添加剂为N,N'-双(叔丁氧羰基)-L-胱氨酸。
2.根据权利要求1所述的HPLC方法,其特征在于:流动相A相为含0.05mol/LN,N'-双(叔丁氧羰基)-L-胱氨酸的10%四氢呋喃水溶液,流动相B相为乙腈与四氢呋喃按体积比5:1形成的混合有机溶剂,A相和B相按照体积比42:58等度洗脱。
3.根据权利要求1所述的HPLC方法,其特征在于:分离色谱柱采用Waters XBridge C18色谱柱(4.6mm×150mm,5μm)。
4.根据权利要求1所述的HPLC方法,其特征在于:分离温度为30℃。
5.根据权利要求1所述的HPLC方法,其特征在于:检测波长为275nm。
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