第 42 卷第 2 期 | | Vol. 42 No. 2 | 2012 年 4 月 | Apr 2012 |
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所属栏目:医药及中间体
比沙可啶的合成工艺研究 |
张军辉1,刘英华1,李金岭2,李洪玉2,姜申德1*
(1.天津大学 药物科学与技术学院,天津 300072;2. 河北康泰药业有限公司,河北 沧州 061000) |
摘 要:以2-吡啶甲醛为起始原料,在浓硫酸催化下,与苯酚缩合得到4,4'-二羟基二苯基-(2-吡啶)-甲烷和2,4'-二羟基二苯基-(2-吡啶)-甲烷,利用二者在乙酸乙酯中溶解度的差别,分离得到4,4'-二羟基二苯基-(2-吡啶)-甲烷,用氢氧化钠转变得到酚钠盐后,经乙酰化得到比沙可啶。其结构经核磁共振氢谱确证,纯度经液相色谱分析为99%。改进后的合成工艺操作简便,收率可达58%。 |
关键词:4',4''-二羟基二苯基-(2-吡啶)-甲烷;比沙可啶;乙酰化反应 |
中图分类号:R975+.3 文献标识码:A 文章编号:1009-9212(2012)02-0030-03 |
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Synthesis of Bisacodyl |
ZHANG Jun-hui1,LIU Ying-hua1,LI Jin-ling2,LI Hong-yu 2,JIANG Shen-de1*
(1. School of Pharmaceutical Science and Technology,Tianjin University,Tianjin 300072,China;2. Hebei Kangtai Pharmaceutical Co.,Ltd. Cangzhou 061000,China) |
Abstract:Pyridine-2-aldehyde(2)was reacted with phenol(3)in the presence of concentrated sulfuric acid to give a mixture of 4,4'-dihydroxy-diphenyl-(2-pyridyl)-methane(4)and 2,4'-dihydroxy-diphenyl-(2-pyridyl)-methane(5). 4 was isolated from the mixture with purity of 99%(LC)due to its low solubility in ethyl acetate and was transformed to sodium salt with sodium hydroxide. Further acetylation of the sodium salt gave the title compound bisacodyl(1)in overall yield of 58%,that the structure was confirmed by 1H NMR. |
Key words:4,4'-dihydroxy-diphenyl-(2-pyridyl)-methane;bisacodyl;acetylation |
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作者简介:张军辉(1986-),男,河南信阳人,硕士研究生,研究方向:药物化学。(E-mail:zhangjunhui@tju.edu.cn)
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联 系 人: 姜申德,教授,博士生导师,主要从事药物化学研究工作。(E-mail:jianggroup@tju.edu.cn)
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收稿日期: 2012-04-1
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