Synthesis 2008(9): 1436-1442  
DOI: 10.1055/s-2008-1072515
PAPER
© Georg Thieme Verlag Stuttgart · New York

Synthesis of Unsaturated Tryprostatin B Analogues and Determination of Their Enantiomeric Purity with (S)-1-Benzyl-6-methylpiperazine-2,5-dione

Jernej Wagger, Jurij Svete, Branko Stanovnik*
Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, P.O. Box 537, 1000 Ljubljana, Slovenia
Fax: +386(1)2419220; e-Mail: branko.stanovnik@fkkt.uni-lj.si;
Further Information

Publication History

Received 21 November 2007
Publication Date:
18 March 2008 (online)

Abstract

Novel racemic and enantiomerically enriched unsaturated tryprostatin B analogues were synthesised by an enaminone-based strategy. The synthesis also features a novel copper(I)-catalysed dipeptide formation. In addition, the enantiomeric purity of an enantiomerically enriched analogue was determined by 1H NMR spectroscopy by use of our own chiral solvating agent.