|本期目录/Table of Contents|

[1]周鹏飞,鄢 龙,王 刚,等.肺动脉高压孤儿药Selexipag合成工艺的优化[J].武汉工程大学学报,2021,43(02):148-153.[doi:10.19843/j.cnki.CN42-1779/TQ.202109015]
 ZHOU Pengfei,YAN Long,WANG Gang,et al.Synthesis Process Optimization of Orphan Drug Selexipag for Pulmonary Arterial Hypertension[J].Journal of Wuhan Institute of Technology,2021,43(02):148-153.[doi:10.19843/j.cnki.CN42-1779/TQ.202109015]
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肺动脉高压孤儿药Selexipag合成工艺的优化(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
43
期数:
2021年02期
页码:
148-153
栏目:
化学与化学工程
出版日期:
2021-04-30

文章信息/Info

Title:
Synthesis Process Optimization of Orphan Drug Selexipag for Pulmonary Arterial Hypertension
文章编号:
1674 - 2869(2022)02 - 0148 - 06
作者:
周鹏飞鄢 龙王 刚尹传奇*
武汉工程大学化学与环境工程学院,湖北 武汉 430205
Author(s):
ZHOU Pengfei YAN Long WANG Gang YIN Chuanqi*
School Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
关键词:
二苯基乙二酮5-氯-23-二苯基吡嗪selexipag环合反应胺基化酰胺化合成工艺优化
Keywords:
diphenylacetophenone 5-chloro-23-diphenylpyrazine selexipag cyclization amination amidation synthetic process optimization
分类号:
TQ466.2
DOI:
10.19843/j.cnki.CN42-1779/TQ.202109015
文献标志码:
A
摘要:
首先,以二苯基乙二酮和2-氨基乙酰胺为原料,通过环合反应和羟基氯代合成了5,6-二苯基吡嗪-2-醇(Ⅰ) 和5-氯-2,3-二苯基吡嗪(Ⅱ)。其次,化合物?Ⅱ?与4-异丙氨基丁醇反应得到4-[(5,6-二苯基-2-基)(异丙基)氨基]-1-丁醇(Ⅲ)。然后,化合物?Ⅲ?和溴乙酸甲酯发生Willianmson反应得到2-{4-[N-(5,6-二苯基吡嗪-2-基)-N-异丙基氨基]丁氧基}乙酸甲酯(Ⅳ)。最后,Ⅳ与甲基磺酰胺在叔丁醇钠作用下缩合得到目标产物Selexipag。对各步反应进行了优化,羟基氯代反应条件为: n (Ⅰ)∶n (POCl3)=1.0∶1.7,120?℃反应4 h。胺基化条件为: n (4-异丙氨基丁醇)∶n (Ⅱ)=4.0∶1.0,170?℃反应68?h。Willianmson反应条件为: n (Ⅲ)∶n (溴乙酸甲酯)∶n (四丁基溴化铵)∶n(氢氧化钠)=1.0∶1.0∶0.1∶15.0,甲苯为溶剂,80?℃反应5?h。酰胺化反应条件为: n (Ⅳ)∶n (甲基磺酰胺)∶n (叔丁醇钠)=1.05∶1.0∶1.5,室温反应2 h。优化工艺总收率达到74.5%,且反应条件温和,分离方法简单,适合工业化生产。
Abstract:
First,5,6-diphenylpyrazin-2-ol (Ⅰ)?and?5-chloro-2,3-diphenylpyrazine (Ⅱ) were?synthesized?from diphenylacetophenone?and?2-aminoacetamide?by?cyclization?and?hydroxyl?chlorination.Second, 4-[(5,6-diphenyl-2-yl)(isopropyl)amino]-1-butanol (Ⅲ) was obtained by amination reaction of compound Ⅱ with 4-isopropylaminobutanol.Then,methyl-2-{(4-[N-(5,6-diphenylpyrazine-2-yl)-N-isopropylamino]butoxy}acetate (Ⅳ) was gained by Willianmson reaction of compound?Ⅲ?with methyl bromoacetate. Finally, the condensation reaction of compound Ⅳwith methylsulfonamide in the presence of sodium tert-butoxide (NaOtBu) generated the target product selexipag. The reaction steps were optimized. The hydroxyl chlorination was performed at 120?℃ for 4?h in the molar ratio of n (Ⅰ)∶n(POCl3)=1.0∶1.7. The amination was carried out at 170 ℃ for 68 h in the molar ratio of n(4-isopropylaminobutanol)∶n(Ⅱ)=4.0∶1.0. The Willianmson reaction was proceeded using toluene as a solvent at 80?℃ for 5?h in the molar ratio of n(Ⅲ)∶n(methyl bromoacetate)∶n (tetrabutyl ammonium bromide)∶n(NaOH)=1.0∶1.0∶0.1∶15.0. The amidation was performed at room temperature for 2 h in the molar ratio of n(Ⅳ)∶n(methylsulfonamide)∶n (NaOtBu)=1.05∶1.0∶1.5. The total yield of the optimized process is up to 74.5%, and the separation method is simple with mild reaction conditions, which is suitable for industrial production.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2021-09-24基金项目:湖北省教育厅科研基金(B2019055)?作者简介:周鹏飞,硕士研究生。E-mail: [email protected]*通讯作者:尹传奇,博士,教授。E-mail: [email protected]引文格式:周鹏飞,鄢龙,王刚,等. 肺动脉高压孤儿药Selexipag合成工艺的优化[J]. 武汉工程大学学报,2022,44(2):148-153.
更新日期/Last Update: 2022-04-28