期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 74, 期 21, 页码 8098-8105出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo901480d
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We present here spirocyclic lactam derivatives, embodying D-Phe and L-Ala amino acids as the central core and acting as tetrapeptide and hexapeptide mimetics. An efficient route for their synthesis is demonstrated by using the strategic combination of Seebach's self-reproduction of chirality chemistry and the Pictet-Spengler condensation as key steps. The conformational behavior of peptide mimetics was Investigated by Molecular modeling, X-ray crystallography, NMR (solvent and temperature dependence), IR spectroscopy, and circular dichroism. All data suggest very stable and highly predictable type II' beta-turn conformations.
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