CN106432198B - 一种制备伏立康唑拆分中间体的方法 - Google Patents

一种制备伏立康唑拆分中间体的方法 Download PDF

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CN106432198B
CN106432198B CN201610811521.4A CN201610811521A CN106432198B CN 106432198 B CN106432198 B CN 106432198B CN 201610811521 A CN201610811521 A CN 201610811521A CN 106432198 B CN106432198 B CN 106432198B
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voriconazole
acetone
levo
racemate
water
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黄虎
黄文锋
涂国良
徐中明
吴强晖
孟昭旸
方玉玲
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Zhejiang Huahai Pharmaceutical Co Ltd
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    • C07D403/00Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
    • C07D403/02Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
    • C07D403/06Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
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    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C303/00Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
    • C07C303/02Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof
    • C07C303/22Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof from sulfonic acids, by reactions not involving the formation of sulfo or halosulfonyl groups; from sulfonic halides by reactions not involving the formation of halosulfonyl groups
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Abstract

本发明提供了一种新的伏立康唑左旋樟脑磺酸盐的制备方法,该方法包括将伏立康唑外消旋体和左旋樟脑磺酸溶解在水和丙酮组成混合溶剂中,降温析晶,过滤烘干得到伏立康唑左旋樟脑磺酸盐。本发明通过调整拆分溶剂,有效降低了生产成本。

Description

一种制备伏立康唑拆分中间体的方法
技术领域
本发明涉及一种制备伏立康唑中间体的方法。
背景技术
伏立康唑(voriconazole,VRC,UK109496)是美国辉瑞公司在氟康唑基础上合成的一种新型抗真菌药,主要用于进行性、有致命危险的免疫损害患者。由于伏立康唑抗真菌谱广、抗菌效力强,安全性好,且国内市场对抗真菌药物的需求增长迅速,因此市场前景巨大。
伏立康唑,其化学名为:(2R,3S)-2-(2,4-二氟苯基)-3-(5-氟嘧啶-4-基)-1-(1H-1,2,4-三唑-1-基)-2-丁醇,结构式如式Ⅰ所示:
Figure BDA0001111427120000011
伏立康唑外消旋体作为一种重要的中间体,化学名为:(2R,3S/2S,3R)-2-(2,4-二氟苯基)-3-(5-氟嘧啶-4-基)-1-(1H-1,2,4-三唑-1-基)-2-丁醇,结构式如式Ⅱ所示:
Figure BDA0001111427120000012
从伏立康唑的结构可以看出其有两个手性中心,可能存在四种异构体,对于异构体的分离一般有两种方法,第一种是在反应过程中手性诱导,这种方法一般需要采用手性催化剂,成本比较高,不利于大规模的工业生产,第二种是采用手性拆分剂进行拆分,手性拆分剂的回收比较简便,一般可以反复使用,这种方法在工业生产中经常采用。
在经过一系列的预处理后,我们可以得到伏立康唑的外消旋体,即(2R,3S)构型和(2S,3R)构型的混合物。伏立康唑的外消旋体需要一步拆分得到伏立康唑,即(2R,3S)-2-(2,4-二氟苯基)-3-(5-氟嘧啶-4-基)-1-(1H-1,2,4-三唑-1-基)-2-丁醇。
专利EP2444398A2中公开了伏立康唑外消旋体的拆分方法,使用的拆分剂是左旋樟脑磺酸,拆分溶剂是甲醇和丙酮的混合溶剂,合成路线如下:
Figure BDA0001111427120000021
上述拆分溶剂存在以下两个问题:
1.甲醇和丙酮这两种溶剂沸点比较接近,且挥发性都比较强,很难进行分离,因此,拆分物的溶剂回收是一个很大的问题,增加了生产成本,同时也不符合环保生产的要求。
2.在拆分过程中,拆分溶剂的使用量非常大,产能较低,严重影响的了拆分物的大规模生产。
为了解决这两个问题,我们对伏立康唑的拆分方法进行了改进,开发了一种新型的拆分方法。
发明内容
本发明提供了一种伏立康唑左旋樟脑磺酸盐的制备方法,包括如下步骤:将伏立康唑外消旋体和左旋樟脑磺酸溶解在水和丙酮组成混合溶剂中,降温析晶,过滤烘干得到伏立康唑左旋樟脑磺酸盐。
上述制备方法中,其中丙酮和水的体积比为100:1-1:100,优选为15:1-5:1。所述混合溶剂的使用量相对于伏立康唑外消旋体为10-30mL/g,优选为10-15mL/g。析晶温度为0-40℃,优选为15-30℃。
本发明得到的伏立康唑左旋樟脑磺酸盐可以根据现有技术的方法,加碱游离即得到伏立康唑。
本发明有意义的技术效果是通过调整拆分溶剂,降低生产成本,提高产能,极具工业生产价值。
具体实施方式
实施例1:
伏立康唑外消旋体(9g),左旋樟脑磺酸(6g),丙酮(150mL),水(30mL),升温至50℃,溶液澄清,自然降温至0℃,在0℃搅拌2小时,过滤,HPLC检测,ee%=99.3%,产率30.1%。
实施例2:
伏立康唑外消旋体(9g),左旋樟脑磺酸(6g),丙酮(150mL),水(15mL),升温至50℃,溶液澄清,自然降温至25℃,在25℃搅拌2小时,过滤,HPLC检测,ee%=99.7%,产率36.6%。
实施例3:
伏立康唑外消旋体(15g),左旋樟脑磺酸(10g),丙酮(150mL),水(15mL),升温至50℃,溶液澄清,自然降温至20℃,在20℃搅拌2小时,过滤,HPLC检测,ee%=99.7%,产率40.4%。
实施例4:
伏立康唑外消旋体(15g),左旋樟脑磺酸(10g),丙酮(150mL),水(10mL),升温至50℃,溶液澄清,自然降温至25℃,在25℃搅拌2小时,过滤,HPLC检测,ee%=99.8%,产率37.5%。
对比实施例:
伏立康唑外消旋体(15.1g)溶于丙酮(288mL)中,加入左旋樟脑磺酸(8.51g)的甲醇(96mL)溶液,升温至50℃,溶液澄清,缓慢降温至20℃,并在20℃搅拌18小时,过滤,HPLC检测,ee%=99.8%,产率35%。

Claims (2)

1.一种伏立康唑左旋樟脑磺酸盐的制备方法,包括如下步骤:将伏立康唑外消旋体和左旋樟脑磺酸溶解在水和丙酮组成混合溶剂中,降温析晶,过滤烘干得到伏立康唑左旋樟脑磺酸盐,其中丙酮和水的体积比为15:1-10:1,所述混合溶剂的使用量相对于伏立康唑外消旋体为10-15mL/g,析晶温度为15-30℃。
2.一种伏立康唑的合成方法,包括以下步骤:
a)将伏立康唑外消旋体和左旋樟脑磺酸溶解在水和丙酮组成混合溶剂中,降温析晶,过滤烘干得到伏立康唑左旋樟脑磺酸盐,其中丙酮和水的体积比为15:1-10:1,所述混合溶剂的使用量相对于伏立康唑外消旋体为10-15mL/g,析晶温度为15-30℃,
b)将步骤a)所述的方法制备得到的伏立康唑左旋樟脑磺酸盐,加碱游离得到伏立康唑。
CN201610811521.4A 2016-09-08 2016-09-08 一种制备伏立康唑拆分中间体的方法 Active CN106432198B (zh)

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CN201610811521.4A CN106432198B (zh) 2016-09-08 2016-09-08 一种制备伏立康唑拆分中间体的方法
EP16915563.7A EP3511326B1 (en) 2016-09-08 2016-11-10 Method for preparing voriconazole l-camphorsulphonate and voriconazole
ES16915563T ES2911289T3 (es) 2016-09-08 2016-11-10 Procedimiento para preparar L canforsulfonato de voriconazol y voriconazol
PCT/CN2016/105312 WO2018045629A1 (zh) 2016-09-08 2016-11-10 一种制备伏立康唑左旋樟脑磺酸盐以及伏立康唑的方法
US16/330,692 US11919884B2 (en) 2016-09-08 2016-11-10 Method for preparing voriconazole L-camphorsulphonate and voriconazole
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CN111440152B (zh) * 2020-05-18 2022-09-27 浙江诚意药业股份有限公司 一种伏立康唑的制备方法
CN113354625B (zh) * 2021-06-16 2023-09-26 安徽普利药业有限公司 伏立康唑的合成工艺

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