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奥拉西坦的合成工艺改进
引用本文:杨英梅,苏代国.奥拉西坦的合成工艺改进[J].河北工业科技,2013,30(3):212-214.
作者姓名:杨英梅  苏代国
作者单位:石药集团欧意药业有限公司;河北科技大学体育工作部
摘    要:介绍了一种合成奥拉西坦的改进方法,以双乙烯酮为起始原料,经氯化开环、酯化得到4-氯-乙酰乙酸甲酯,经氯化、催化甲氧基化两步反应,得到中间产物,再直接与甘氨酰胺盐酸盐在醇类溶剂中环合得到4-甲氧基-吡咯啉-2-酮-1-基乙酰胺,脱甲基保护得到2,4-二氧吡咯啉-1-基乙酰胺盐酸盐,最后还原得到奥拉西坦。该方法简化了操作步骤,总收率达到28.1%,较相关专利提高了5.64%,成本降低,更加适合工业化生产。

关 键 词:奥拉西坦  甘氨酰胺盐酸盐  乙醇  脱保护  还原

Improved synthesis of oxiracetam
YANG Yingmei and SU Daiguo.Improved synthesis of oxiracetam[J].Hebei Journal of Industrial Science & Technology,2013,30(3):212-214.
Authors:YANG Yingmei and SU Daiguo
Institution:1.Ouyi Pharmaceutical Company Limited,CSPC,Shijiazhuang Hebei 050051,China;2.Department of Physical Education,Hebei University of Science and Technology,Shijiazhuang Hebei 050018,China)
Abstract:This article describes an improved method on the synthesis of oxiracetam.There are several steps for the synthesis,first using diketene as the starting material,through chlorination,ring-opening,esterification reaction to give 4-chloro-acetoacetic acid methyl ester,and second using methoxy reaction to directly produce an intermediate product,then it is reacted with glycinamide hydrochloride cyclization in an alcoholic solvent to produce 4-methoxy-pyrrolin-2-one-1-yl-acetamide,and using demethyl to give 2,4-dioxo-pyrrolin-1-yl-acetamide hydrochloride,finally through hydrogenation to give oxiracetam.This approach simplifies the steps,and the total yield reaches 28.1%,5.64% higher than that of the related patents,while the cost is lower,and it is more suitable for industrial production.
Keywords:oxiracetam  glycinamide hydrochloride  ethanol  deprotection  hydrogenation
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