Abstract
AbstractStarting fromN‐protectedcis‐ andtrans‐2‐aminocyclopent‐3‐enecarboxylic acid derivatives, isomers of 2‐amino‐3‐hydroxycyclopentanecarboxylic acid (8and12) were prepared via oxazoline intermediates, whereas the stereoisomeric 2‐amino‐3,4‐dihydroxycyclopentanecarboxylic acids14and17were synthesized by OsO4‐catalyzed oxidation. The enantiomers of8and14were also prepared by the same pathway. The structures, stereochemistry and relative configurations of the synthesized compounds were proved by NMR spectroscopy. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
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