第 48 卷第 1 期Vol. 48 No. 1
2018 年 2 月Feb 2018

所属栏目:医药及中间体

Suvorexant关键中间体的合成研究
叶海伟1,周丽萍1,王志华2 (1.台州职业技术学院 化学制药研究所,浙江 台州 318000;2. 浙江新东港药业股份有限公司,浙江 台州 318000)
摘 要:以2-氨基乙醇(2)为原料,经Ns保护,与(R)-(3-羟丁基)-氨基甲酸叔丁酯(4)发生缩合反应,再经Mitsunobu关环与脱Ns保护反应,得到Suvorexant关键中间体1。总收率为57%,产物的结构经1H NMR和MS分析确证,该方法操作简单、收率高、无手性异构体杂质产生。
关键词:Suvorexant;2-氨基乙醇;(R)-(3-羟丁基)-氨基甲酸叔丁酯
Synthesis of the Key Intermediate of Suvorexant
YE Hai-wei1, ZHOU Li-ping1, WANG Zhi-hua2 (1. Chemical Pharmaceutical Research Institute, Taizhou Vocational & Technical College, Taizhou 318000, China; 2. Zhejiang Neo-Dankon Pharmaceutical Co., Ltd., Taizhou 318000, China)
Abstract:(R)-Tert-butyl 5-methyl-1,4-diazepane-1-carboxylate(1), a key intermediate for Suvorexant was synthesized via N-protection using 2-aminoethanol (2) as the staring material, followed by condensation with (R)-tert-butyl (3-hydroxybutyl)carbamate (4), which finally led to 1 through Mitsunobu and deprotection reactions. The total yield was up to 57%, and the structure of the product was characterized using 1H NMR and MS spectra. The improved synthetic route was of advantages including simple operation, high yield, and none of chiral isomers impurity production.
Key words:Suvorexant; 2-aminoethanol; (R)-tert-butyl(3-hydroxybutyl)carbamate
基金项目:台州市科技计划项目(162gy54),台州职业技术学院校级课题(2018DKC06)。
作者简介:叶海伟(1983-),男,浙江台州人,讲师,博士,主要从事药物及中间体的合成及工艺开发。
收稿日期:2018-02-27