Efficient and Practical Protection of the Catechol Residue of 3,4-Dihydroxyphenylalanine (DOPA) Derivative as Acetonide
作者:Vadim Soloshonok、Hisanori Ueki
DOI:10.1055/s-2008-1032164
日期:2008.3
The acetonide formation of 3,4-dihydroxyphenylalanine (DOPA) derivative was realized under efficient and practical reaction conditions: the reaction of the methyl ester of DOPA in acetone-i-PrOH in the presence of 5 mol% of TsOH afforded the catechol side chain protected DOPA as an acetonide in quantitative yield; the workup procedure is a simple evaporation of the solvents. This methodology allows an access to the reaction in large scale.
在高效实用的反应条件下,实现了 3,4- 二羟基苯丙氨酸(DOPA)衍生物的丙酮化:DOPA 的甲酯在丙酮-i-PrOH 中,在 5 摩尔的 TsOH 存在下进行反应,得到了儿茶酚侧链保护的 DOPA(丙酮化物),产率定量。这种方法可以大规模地进行反应。