CN107445948B - 一种新型药物中间体化合物及其制备方法和用途 - Google Patents

一种新型药物中间体化合物及其制备方法和用途 Download PDF

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CN107445948B
CN107445948B CN201610373162.9A CN201610373162A CN107445948B CN 107445948 B CN107445948 B CN 107445948B CN 201610373162 A CN201610373162 A CN 201610373162A CN 107445948 B CN107445948 B CN 107445948B
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CN107445948A (zh
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张健
王飞
严伟才
徐西宁
吕少清
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Suzhou Entai New Material Technology 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
    • C07D403/14Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing three or more hetero rings
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Abstract

本发明属于医药技术领域,涉及一种新型药物关键中间体化合物及其制备方法和用途,包括以结构如下所示的化合物:
Figure DSA0000130593100000011
其中R1和R2为氨基保护基团。

Description

一种新型药物中间体化合物及其制备方法和用途
技术领域
本发明属于医药技术领域,涉及一种新型药物关键中间体化合物及其制备方法和用途。
背景技术
Ravidasvir是一种处于临床阶段的治疗丙型肝炎病毒(HCV)感染的药物,已公开的II期临床试验结果显示了很高的治愈率,展现了很好的成药潜力。
Ravidasvir结构如下式所示
Figure BSA0000130593120000011
已有公开文献如WO2010065674等中公开了多种Ravidasvir或其类似物的合成路线,主要是通过将制备得到的萘片段和苯并咪唑片段经偶联反应得到Ravidasvir主链,然后脱去尾端氨基保护基团,再与氨基酸片段反应得到Ravidasvir或其类似物。
发明内容
本发明目的在于提供一种用于制备Ravidasvir的关键中间体化合物,该化合物的制备方法和其用于制备Ravidasvir的用途。
本发明的一方面在于提供一种新型药物中间体化合物,其结构如式III所示:
Figure BSA0000130593120000012
其中R1和R2为氨基保护基团。
作为一种优选的实施方案,所述的式III化合物中R1和R2均为叔丁氧羰基。
本发明的另一方面在于提供一种式III化合物的制备方法,包括由式V化合物与式IV化合物晶偶联反应得到,反应方程式如下:
Figure BSA0000130593120000013
其中R1和R2如上文所述。
本发明的另一方面在于,提供一种式III化合物的用途,其经闭环反应制备式II化合物:
Figure BSA0000130593120000021
其中R1和R2如上文所述。
所述式II化合物可参考已公开文献WO2010065674及根据本领域技术人员所熟知的方式进一步制备得到Ravidasvir。
本发明提供了一种用于制备Ravidasvir的关键中间体化合物及通过该化合物制备Ravidasvir的方法。与已有Ravidasvir的制备方法相比,该方法简易可行,方便工业化生产,且产品纯度高,适合作为Ravidasvir的药用原料药。
具体实施方式
为了使本领域技术人员可以更好地理解本发明,以下通过具体实施例对本发明技术方案进行进一步说明。需要理解的是,下述实施例只为更好地说明本发明而给出,并不是对本发明内容的限制。
实施例1:式III化合物的制备
氮气保护下,向干燥100ml三口应瓶中加入式IV化合物(2g,6.60mmol),式V化合物(2g,7.26mmol),碳酸氢钠(1.2g,19.80mmol)和Pd(dppf)Cl2(0.27g,0.33mmol),加入30mL二氧六环和6ml水。升温到80℃反应,TLC监控反应完全。将反应液倒入250ml水中,析出固体,过滤,在60℃烘干得到4.4g粗品。粗品用柱层析纯化得到式III化合物2.1g。
LCMS(ESI):m/z669.8[M+H]+。
1H NMR(400MHz,d6-DMSO):δ12.047(s,1H),8.747-8.760(d,J=5.2Hz,1H),8.331(s,1H),8.183-8.218(m,1H),8.113-8.135(d,J=8.8Hz,1H),7.982-8.046(m,3H),7.655(s,1H),5.593-5.799(m,2H),4.966-5.044(m,1H),4.359-4.414(m,1H),3.607-3.653(m,1H),3.315-3.457(m,4H),1.859-2.384(m,8H),1.414,1.403,1.116(s,s,s,18H)ppm
实施例2:式II化合物的制备
氮气保护下,向干燥100ml反应瓶中加入式III化合物(500mg,7.48mmol),醋酸铵0.576g和甲苯(20mL),升温到90℃反应,TLC监控反应,直至原料反应完。冷却后过滤,滤液浓缩至干,加入二氯甲烷50ml,用20ml水和20ml饱和食盐水洗涤一次,硫酸钠干燥后浓缩干,柱层析分离,得到淡黄色固体206mg。
LCMS(ESI):m/z649.3[M+H]+。
1H NMR(400MHz,d6-DMSO):δ12.246-12.425(m,1H),11.880-12.017(m,1H),8.258(s,1H),8.149(s,1H),7.831-7.983(m,5H),7.605(m,3H),4.832-5.031(m,2H),3.590-3.634(m,2H),3.337-3.472(m,2H),2.168-2.414(m,2H),1.887-2.037(m,6H),1.414,1.185,1.120,(s,s,s18H)ppm
实施例3:式III化合物的制备
氮气保护下,向干燥1000ml三口应瓶中加入式IV化合物(20g,66mmol),式V化合物(20g,72.6mmol),碳酸氢钠(12g,198mmol)和Pd(dppf)Cl2(2.7g,3.3mmol),加入300mL二氧六环和50ml水。升温到80℃反应,TLC监控反应完全。将反应液倒入2000mL水中,过滤,60℃烘干得到42g粗品。粗品用柱层析纯化得到式III化合物24.5g。
LCMS(ESI):m/z669.6[M+H]+。
实施例4:式II化合物的制备
氮气保护下,向干燥1000ml反应瓶中加入式III化合物(5g,74.8mmol),醋酸铵5.76g和甲苯(200mL),升温到90℃反应,TLC监控反应,直至原料反应完。冷却后过滤,滤液浓缩至干,加入二氯甲烷500ml,用200ml水和200ml饱和食盐水洗涤一次,硫酸钠干燥后浓缩干,柱层析分离得到淡黄色固体2.1g。
LCMS(ESI):m/z649.4[M+H]+。

Claims (4)

1.本结构如下所示的化合物:
Figure FDA0002600426250000011
其中R1和R2均为叔丁氧羰基。
2.权利要求1所述化合物的制备方法,包括:
Figure FDA0002600426250000012
3.权利要求1所述化合物的用途,其用于制备式II化合物:
Figure FDA0002600426250000013
其中R1和R2如权利要求1或2任一所述。
4.如权利要求3所述的用途,其特征在于,II化合物进一步制备得到Ravidasvir。
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102796084A (zh) * 2012-09-10 2012-11-28 合肥科尚医药科技有限公司 一种活性物质及其在治疗丙型肝炎中的应用及制备方法

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CA2800509A1 (en) * 2010-05-24 2011-12-01 Presidio Pharmaceuticals, Inc. Inhibitors of hcv ns5a

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CN102796084A (zh) * 2012-09-10 2012-11-28 合肥科尚医药科技有限公司 一种活性物质及其在治疗丙型肝炎中的应用及制备方法

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