CN1800180A - 一种安吡昔康的精制方法 - Google Patents

一种安吡昔康的精制方法 Download PDF

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CN1800180A
CN1800180A CN 200610037827 CN200610037827A CN1800180A CN 1800180 A CN1800180 A CN 1800180A CN 200610037827 CN200610037827 CN 200610037827 CN 200610037827 A CN200610037827 A CN 200610037827A CN 1800180 A CN1800180 A CN 1800180A
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ampiroxicam
crude product
purification
haloalkane
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CN100389114C (zh
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孙晋瑞
王玉喜
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XINGANG MEDICINE
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XINGANG MEDICINE
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Abstract

本发明涉及一种安吡昔康的精制方法。安吡昔康原料药的纯度受重结晶的溶剂影响很大,本发明提供了一种新的精制方法,即将安吡昔康粗品溶于卤代烷中,洗净干燥后,浓缩至干,再重结晶,得到安吡昔康白色结晶。用此方法精制的安吡昔康稳定性好,纯度高,操作方法简便,成本低,宜于工业化生产。

Description

一种安吡昔康的精制方法
技术领域
本发明涉及一种安吡昔康的精制方法。
背景技术
安吡昔康(Ampiroxicam)即4-[1-(Ethoxycarbonyloxy)ethoxy]-2-methyl-N-2-pyridyl-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide(CAS Registry Number:99464-64-9),是为新一代长效型非甾体抗炎药,临床上主要用于类风湿性关节炎、骨关节炎、腰痛、肩周炎、颈肩腕综合征、外伤、手术和拔牙后的镇痛和消炎。作为日服一次的新一代非甾体抗炎镇痛药,安吡昔康具有作用强,持续时间长,安全性高、胃肠耐受性好等显著特点,在医药市场上颇受关注。EP147177报道了安吡昔康的精制方法:将含有安吡昔康粗品的反应液经柱层析后,再用甲苯重结晶。此方法要使用有较强致癌性的甲苯做重结晶溶剂,易产生溶剂残留,杂质难以去除,影响产品质量,很难达到人的临床用药要求。另外,柱层析花费时间长,所用洗脱剂为混合溶剂,不易回收套用,成本高,不易实现工业化生产。
发明内容
本发明的目的在于避免上述现有技术存在的不足之处而提供一种溶剂毒性小,安全系数大,操作简便,节约成本,易于实现工业化生产的安吡昔康的精制方法。所得精品外观好,纯度高,产品质量符合人的临床用药要求。
本发明的目的可以通过以下措施来达到:
一种安吡昔康的精制方法,其特征在于将安吡昔康粗品溶于安吡昔康粗品量10~30倍的卤代烷中,分别用蒸馏水、饱和氯化钠溶液洗净,干燥,浓缩,再加入安吡昔康粗品量5~15倍有机溶剂重结晶,得到安吡昔康白色结晶。
本发明的目的还可以通过以下措施来达到:
将安吡昔康粗品溶于安吡昔康粗品量25~28倍的卤代烷中。
其中所述的卤代烷为C1~C10的烷烃各卤代物。
其中所述的重结晶有机溶剂为C1~C8的烷基醇、酮或酯。
用本发明方法精制所得的精品外观好,纯度高,产品质量符合人的临床用药要求,安吡昔康结晶HPLC纯度可达99%以上。
具体实施方式
实施例1
在装有回流冷凝器和搅拌棒的1000ml四颈瓶中,氮气保护下,分别加入安吡昔康粗品(12.3g),加入246ml二氯甲烷搅拌溶解,分别用125ml水和125ml饱和食盐水洗涤,无水硫酸钠干燥,蒸除二氯甲烷,残留物加入123ml甲酸乙酯,1.0g活性炭,回流30分钟,热滤,冷却析晶,过滤,100℃以下真空干燥,得安吡昔康白色结晶9.4g,mp157~159℃,收率76.4%。
实施例2
在装有回流冷凝器和搅拌棒的1000ml四颈瓶中,氮气保护下,分别加入安吡昔康粗品(12.3g),加入123ml溴丁烷搅拌溶解,分别用230ml水和230ml饱和食盐水洗涤,无水硫酸钠干燥,蒸除溴丁烷,残留物加入62ml丁酮,1.0g活性炭,回流25分钟,过滤,冷却析晶,过滤,100℃以下真空干燥,得安吡昔康白色结晶9.0g,mp156~159℃,收率73.2%。
实施例3
在装有回流冷凝器和搅拌棒的1000ml四颈瓶中,氮气保护下,分别加入安吡昔康粗品(12.3g),加入369ml溴癸烷搅拌溶解,分别用320ml水和320ml饱和食盐水洗涤,无水硫酸钠干燥,蒸除溴癸烷,残留物加入185ml异丙醇,1.0g活性炭,回流20分钟,过滤,冷却析晶,过滤,100℃以下真空干燥,得安吡昔康白色结晶8.9g,mp155~158℃,收率69.7%。

Claims (4)

1.一种安吡昔康的精制方法,其特征在于将安吡昔康粗品溶于安吡昔康粗品量10~30倍的卤代烷中,分别用蒸馏水、饱和氯化钠溶液洗净,干燥,浓缩,再加入安吡昔康粗品量5~15倍有机溶剂重结晶,得到安吡昔康白色结晶。
2.根据权利要求1所述的安吡昔康的精制方法,其特征在于将安吡昔康粗品溶于安吡昔康粗品量25~28倍的卤代烷中。
3.根据权利要求1所述的安吡昔康的精制方法,其特征在于其中所述的卤代烷为C1~C10的烷烃各卤代物。
4.根据权利要求1所述的安吡昔康的精制方法,其特征在于其中所述的重结晶有机溶剂为C1~C8的烷基醇、酮或酯。
CNB2006100378275A 2006-01-17 2006-01-17 一种安吡昔康的精制方法 Expired - Fee Related CN100389114C (zh)

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US4551452A (en) * 1983-12-21 1985-11-05 Pfizer Inc. Anti-inflammatory 2-methyl-2H-1,2-benzo-(or -thieno-)thiazine-3-carboxamide 1,1-dioxide derivatives, compositions, and method of use therefor

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