CN104237417A - 一种地屈孕酮中间体的分析方法 - Google Patents

一种地屈孕酮中间体的分析方法 Download PDF

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CN104237417A
CN104237417A CN201410512819.6A CN201410512819A CN104237417A CN 104237417 A CN104237417 A CN 104237417A CN 201410512819 A CN201410512819 A CN 201410512819A CN 104237417 A CN104237417 A CN 104237417A
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diethylene glycol
mobile phase
diene
glycol ketal
water
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CN104237417B (zh
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许乃茜
刘亚宁
梁佶轩
张芝利
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China Resources Zizhu Pharmaceutical Co Ltd
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China Resources Zizhu Pharmaceutical Co Ltd
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Abstract

本发明涉及地屈孕酮中间体的分析方法,具体涉及孕甾-5,7-二烯-3,20-二乙二醇缩酮的分析方法,本发明提供了一种全新的孕甾-5,7-二烯-3,20-二乙二醇缩酮的分析方法,以甲醇和水为流动相,本方法的设备要求不高,操作简便。

Description

一种地屈孕酮中间体的分析方法
技术领域
本发明涉及地屈孕酮中间体的分析方法,具体涉及孕甾-5,7-二烯-3,20-二乙二醇缩酮的分析方法。
背景技术
地屈孕酮为6-去氢逆孕酮,是一种口服孕激素,可使子宫内膜进入完全的分泌相,从而防止由雌激素引起的子宫内膜增生和癌变风险。其化学结构与天然孕酮黄体酮最为接近,但体内生物活性较黄体酮更高;口服低剂量生效,且无雌激素、雄激素及肾上腺皮质激素作用;不产热,且对脂代谢物影响,安全性和耐受性更佳。
作为具有高安全性的孕酮,地屈孕酮于1961年全球上市,临床用于治疗闭经、子宫内膜异位、预防功能性出血和先兆性流产。
地屈孕酮原料药开发的一条合成路线如下:
孕甾-5,7-二烯-3,20-二乙二醇缩酮作为地屈孕酮原料开发的一种重要中间体,目前没有任何文献有关于该中间体的分析方法的报道。
由于光反应的特殊性,对孕甾-5,7-二烯-3,20-二乙二醇缩酮的质量要求较高。经过试验,以乙腈作为流动相的组分(如:乙腈和水或者乙腈、甲醇和水为流动相)时,可以将孕甾-5,7-二烯-3,20-二乙二醇缩酮与杂质孕甾-5-烯-3,20-二乙二醇缩酮分离,但始终无法将其他杂质与孕甾-5,7-二烯-3,20-二-乙二醇缩酮很好的分离(见附图1)。
发明内容
为了解决现有技术中没有关于孕甾-5,7-二烯-3,20-二乙二醇缩酮分析方法的问题,本发明提供一种全新的地屈孕酮中间体孕甾-5,7-二烯-3,20-二乙二醇缩酮的分析方法。
由于主要杂质孕甾-5-烯-3,20-二乙二醇缩酮的紫外吸收为末端,按照本领域的常规知识,紫外吸收为末端时,流动相首选乙腈。发明人开创性的采用甲醇和水作为流动相对孕甾-5,7-二烯-3,20-二乙二醇缩酮进行分析,不但将孕甾-5-烯-3,20-二乙二醇缩酮和孕甾-5,7-二烯-3,20-二乙二醇缩酮,还发现另外一种主要杂质:孕甾-4,6-二烯-3,20-二乙二醇缩酮,并与之很好分离。
按照本发明的方法分析按照上述背景技术中的方法制备得到的孕甾-5,7-二烯-3,20-二乙二醇缩酮,发现其中含有的主要杂质为:孕甾-5-烯-3,20-二乙二醇缩酮和孕甾-4,6-二烯-3,20-二乙二醇缩酮,其中孕甾-5-烯-3,20-二乙二醇缩酮为制备孕甾-5,7-二烯-3,20-二乙二醇缩酮的原料。
实现本发明的技术方案为:
一种孕甾-5,7-二烯-3,20-二乙二醇缩酮的分析方法:
a、色谱柱:选用十八烷基硅烷键合硅胶为填充剂的色谱柱,
b、流动相:以甲醇和水为流动相,
c、检测波长为:200-265nm,
d、取检测样品适量,精密称定,用乙腈溶解并稀释成一定浓度的溶液,摇匀,精密量取20μl注入液相色谱仪,记录色谱图。
上述b中流动相甲醇与水的体积比为80∶20,流速为1ml/min。
上述d中溶液的浓度为0.4mg/ml-0.7mg/ml,优选0.5mg/ml和0.6mg/ml。
上述d中记录色谱图至主峰保留时间的1.5-10倍,优选2倍和2.5倍。
本发明的有益效果为:
1、设备要求不高,使用普通的液相色谱即可。
2、流动相选用的甲醇和水普通易得,可行性高。
3、操作过程简单方便。
4、本发明突破了常规,对紫外吸收为末端的化合物采用甲醇和水为流动相,分离效果比采用乙腈为流动相好。
附图说明
附图1:以乙腈和水为流动相孕甾-5,7-二烯-3,20-二乙二醇缩酮与主要杂质的分离图谱
附图2:以甲醇和水为流动相孕甾-5,7-二烯-3,20-二乙二醇缩酮与主要杂质的分离图谱
附图中:主峰:为孕甾-5,7-二烯-3,20-二乙二醇缩酮峰;杂质1:为孕甾-5-烯-3,20-二乙二醇缩酮峰;杂质2:为孕甾-4,6-二烯-3,20-二乙二醇缩酮峰。
具体实施方式
实施例1
色谱条件:
色谱柱:十八烷基硅烷键合硅胶为填充剂的色谱柱(waters symmetry C184.6×100mm,3.5u),
流动相:甲醇和水的体积比为:80∶20,
进样量:20μl,
检测波长:240nm
流速:1ml/min,
操作:取检测样品适量,精密称定,用乙腈溶解并稀释成0.5mg/ml的溶液,摇匀,精密量取20μl注入液相色谱仪,记录色谱图至主峰保留时间的2倍。
实施例2
色谱条件:
色谱柱:十八烷基硅烷键合硅胶为填充剂的色谱柱(waters symmetry C184.6×100mm,3.5u)
流动相:甲醇和水的体积比为:80∶20,
进样量:20μl,
检测波长:220nm,
流速:1ml/min,
操作:取检测样品适量,精密称定,用乙腈溶解并稀释成0.6mg/ml的溶液,摇匀,精密量取20μl注入液相色谱仪,记录色谱图至主峰保留时间的2.5倍。
实施例3
色谱条件:
色谱柱:十八烷基硅烷键合硅胶为填充剂的色谱柱(waters symmetry C184.6×100mm,3.5u或类似)
流动相:甲醇和水的体积比为:80∶20,
进样量:20μl,
检测波长:200nm,
流速:1ml/min,
操作:取检测样品适量,精密称定,用乙腈溶解并稀释成0.4mg/ml的溶液,摇匀,精密量取20μ1注入液相色谱仪,记录色谱图至主峰保留时间的1.5倍。
实施例4
色谱条件:
色谱柱:十八烷基硅烷键合硅胶为填充剂的色谱柱(waters symmetry C184.6×100mm,3.5u或类似)
流动相:甲醇和水的体积比为:80∶20,
进样量:20μ1,
检测波长:265nm,
流速:1ml/min,
操作:取检测样品适量,精密称定,用乙腈溶解并稀释成0.7mg/ml的溶液,摇匀,精密量取20μl注入液相色谱仪,记录色谱图至主峰保留时间的10倍。

Claims (6)

1.一种孕甾5,7-二烯-3,20-二乙二醇缩酮的分析方法:
a、色谱柱:选用十八烷基硅烷键合硅胶为填充剂的色谱柱,
b、流动相:以甲醇和水为流动相,
c、检测波长为:200-265nm,
d、取检测样品适量,精密称定,用乙腈溶解并稀释成一定浓度的溶液,摇匀,精密量取20μl注入液相色谱仪,记录色谱图。
2.根据权利要求1所述的方法,其特征为:流动相甲醇与水的体积比为80∶20,流速为1ml/min。
3.根据权利要求2所述的方法,其特征为:所述步骤d中记录色谱图至主峰保留时间的1.5-10倍。
4.根据权利要求3所述的方法,其特征为:所述步骤d中记录色谱图至主峰保留时间的2倍或2.5倍。
5.根据权利要求4所述的方法,其特征为:所述溶液的浓度为0.4mg/ml-0.7mg/ml。
6.根据权利要求5所述的方法,其特征为:所述溶液的浓度为0.5mg/ml和0.6mg/ml。
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