An enantioselective synthesis of the cyclopentene fragment of nucleoside Q

An enantioselective synthesis of (3S,4R,5S)-(+)-3-amino-4.5-dihydroxycyclopentene, a segment of nucleoside Q and Q base. is reported utilizing an amino acid-derived acylnitroso Diels-Alder cycloaddition. (C) 2003 Elsevier Science Ltd. All rights reserved.