期刊
ORGANIC PROCESS RESEARCH & DEVELOPMENT
卷 15, 期 1, 页码 249-257出版社
AMER CHEMICAL SOC
DOI: 10.1021/op1001947
关键词
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Monatin, a natural sweetener, refers to a collection of four isomers of 2-((1H-indol-3-yl)methyl)-4-amino-2-hydroxypentanedioic acid. A chemo-biocatalytic approach to kilogram quantities of enantiopure 2S,4S-monatin and 2R,4R-monatin from indole is described. Key steps in the process include a (2 + 3) cycloaddition reaction followed by nickel-catalysed reduction to construct the monatin backbone, and a highly selective enzyme resolution of the 2S,4S- and 2R,4R-monatin diastereomeric pair to afford each enantiomer in 99% ee.
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