第 44 卷第 6 期Vol. 44 No. 6
2014 年 12 月Dec 2014

所属栏目:医药及中间体

阿奇霉素合成工艺改进
金 勇,乔 伟,王兆刚,侯仲轲* (浙江国邦药业有限公司, 浙江 绍兴 312369)
摘 要:以红霉素6,9-亚胺醚为起始原料,经亚胺氢化还原和N-甲基化2步反应制备阿奇霉素。还原反应采用Pt/C做催化剂,反应温度为48~52℃,压力为0.8~1.0 MPa;甲基化反应条件:pH为5.0~6.0,38~42℃保温12 h。2步反应采用异丙醇为溶剂,实现了2步反应同溶剂体系制备阿奇霉素,2步收率88.0%,纯度98.7%。
关键词:阿奇霉素;红霉素6,9-亚胺醚;异丙醇;Pt/C
中图分类号:R978.1  文献标识码:A  文章编号:1009-9212(2014)06-0049-03
Improvement on Synthesis of Azithromycin
JIN Yong, QIAO Wei, WANG Zhao-gang, HOU Zhong-ke (Zhejiang Guobang Pharmaceutical Co., Ltd., Shaoxing 312369, China)
Abstract:Azithromycin is prepared by means of hydrogenation and methylation from erythromycin 6,9-iminoether. The hydrogenation of 6,9-iminoether is catalyzed by Pt/C at 48~52℃ and under the pressure of 0.8~1.0 MPa. The methylation is carried out by using formaldehyde and formic acid. The pH value of the reaction mixture is adjusted to 5.0~6.0 and the reaction is monitored for 12 hour at 38~42℃. It should be noted that both of these two reactions are carried out in the same solvent-isopropanol. After recrystallization, an azithromycin dehydrate(88%, purity of 98.7%)is obtained.
Key words:Azithromycin; erythrymicin 6,9-iminoether; isopropanol; Pt/C
作者简介:金 勇(1980-),男,江西萍乡人,工程师,硕士,研究方向:化学工程。
联 系 人:侯仲轲,研究员,研究方向:医药及中间体(E-mail:houzk2008@hotmail.com)。
收稿日期: 2014-10-1