期刊
TETRAHEDRON-ASYMMETRY
卷 16, 期 15, 页码 2613-2623出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetasy.2005.06.017
关键词
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For the first time, all stereoisomers of 1-amino-2-plieiiylcyclopentanecarboxylic acid-c(5)Phe-have been synthesised. A Strecker reaction on 2-phenyleyclo pen tan one and further transformations of each amino nitrile into the amino acid provides cis-c(5)Phe and trans-c(5)Phe with high efficiency. A divergent synthetic route was then developed to obtain the target compounds cis- and trans-c(5)Phe in their racemic form. The preparation of the final enantiomerically pure amino acids and their corresponding N-protected derivatives was also achieved by HPLC resolution of one of the intermediates using a cellulose-derived chiral stationary phase. The relative stereochemistry of each amino acid and its precursors have been unambiguously assigned. (c) 2005 Elsevier Ltd. All rights reserved.
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