详细信息
文献类型:期刊文献
中文题名:(±)-亮氨酸的合成
英文题名:Synthesis of (±)-Leucine
作者:董菁[1];邢静[1];严晶晶[1];施小新[1]
机构:[1]华东理工大学药学院,上海200237
年份:2010
卷号:18
期号:1
起止页码:97
中文期刊名:合成化学
外文期刊名:Chinese Journal of Synthetic Chemistry
收录:CSTPCD;;北大核心:【北大核心2008】;CSCD:【CSCD_E2011_2012】;
基金:国家自然科学基金资助项目(20972048);上海市教育发展基金资助项目(03SG27)
语种:中文
中文关键词:亮氨酸;亮氨酸盐酸盐;合成
外文关键词:leucine ; leucine hydrochloride; synthesis
摘要:以氨基丙二酸二乙酯盐酸盐(2)为原料通过一条全新路线合成了外消旋亮氨酸盐酸盐(1)。2的氨基经Boc保护制得Boc-氨基丙二酸二乙酯(3);3与甲代烯丙基氯发生取代反应制得Boc-氨基-(2-甲基-2-丙烯基)丙二酸二乙酯(4);4经Pd/C催化加氢制得Boc-氨基-(2-异丁基)丙二酸二乙酯(5);5在浓盐酸中回流反应,一步完成脱保护、脱羧、水解过程合成1。总收率55%,其结构经1H NMR和MS确证。
A novel synthetic route for racemic leucine hydrochloride (1) starting from diethyl aminomalonate hydrochloride(2) was studied herein. Amino group of 2 was first protected with (Boc)20 to give diethyl N-Boc-amino-malonate, then treated with 3-chloro-2-methylprop-1-ene to produce diethyl N-Boc-amino-2-(2-methyl-2-propenyl)-malonate(4). Pd/C catalyzed hydrogenation of double bond of 4 yielded diethyl N-Boc-amino-2-isobutyl-malonate(5). 1 in overall yield of 55% was synthesized from 5 by one-pot of deprotection, decarboxylation and hydrolysis in concentrated hydrochloric acid at reflux refluxing. The structures were confirmed by ^1H NMR and MS
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