第 52 卷第 3 期Vol. 52 No. 3
2022 年 6 月Jun 2022

所属栏目:医药及中间体

西他列汀关键中间体的合成研究
陈云华1,2,谭建德2,周魏魏2,缪炳林2,徐 龙2,周丽萍1 (1.台州职业技术学院 化学制药研究所,浙江 台州 318000;2.台州达辰药业有限公司,浙江 临海 317016)
摘 要:水合肼(2)经三氟乙酸乙酯和氯乙酰氯取代反应,Vilsmeier试剂关环,得中间体3,再经乙二胺取代,盐酸乙醇关环制得西他列汀关键中间体3-三氟甲基-5,6,7,8-四氢-1,2,4-三唑-[4,3-a]并吡嗪盐酸盐(1),其结构经1H NMR和MS确证,总收率达55%。此反应条件温和,同时避免含磷废水产生,更适合工业化生产。
关键词:西他列汀;关键中间体;脱水;合成
中图分类号:TQ246.3  文献标识码:A  文章编号:1009-9212(2022)03-0023-04
Research on the Synthesis of Key Intermediate of Sitagliptin
CHEN Yun-hua1,2, TAN Jian-de2, ZHOU Wei-wei2, MIAO Bing-lin2, XU Long2, ZHOU Li-ping1 (1.Chemical Pharmaceutical Research Institute, Taizhou Vocational & Technical College, Taizhou 318000, China; 2.Taizhou Dachen Pharmaceutical Co., Ltd., Linhai 317016, China)
Abstract:Using hydrazine hydrate (2) as the raw material, compound 3 was obtained through the reaction with ethyl trifluoroacetate, then chloracetylation, cyclization using Vilsmeier reagent. Compound 3 was subjected to ethylendiamine, dehydration and recyclization under hydrochloric acid to obtain the key intermediate of sitagliptin (1) in an overall yield of 55%. The structures of the intermediate and product were characterized by 1H NMR and MS spectra. The advantages of this present process include mild reaction condition and avoiding phosphorus wastewater. Therefore it is promising for industrial application.
Key words:Sitagliptin; key intermediate; dehydration; synthesis
基金项目:台州市科技计划项目(21gyb24),浙江省教育厅高等学校访问工程师校企合作项目(FG2020223)。
作者简介:陈云华(1966—),男,浙江温岭人,高级工程师,研究方向:药物及中间体合成及工艺优化(E-mail:1325100132@qq.com)。
收稿日期:2022-03-15