ENANTIOSELECTIVE SYNTHESIS OF FLAVONOIDS - PART-5(1) - POLYOXYGENATEDBETA-HYDROXYDIHYDROCHALCONES

Authors
NEL RJJ VANHEERDEN PS VANRENSBURG H FERREIRA D
Citation
Rjj. Nel et al., ENANTIOSELECTIVE SYNTHESIS OF FLAVONOIDS - PART-5(1) - POLYOXYGENATEDBETA-HYDROXYDIHYDROCHALCONES, Tetrahedron letters, 39(31), 1998, pp. 5623-5626
Citations number
25
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron letters → ACNP
ISSN journal
00404039
Volume
39
Issue
31
Year of publication
1998
Pages
5623 - 5626
Database
ISI
SICI code
0040-4039(1998)39:31<5623:ESOF-P>2.0.ZU;2-6
Abstract
Epoxidation of a series of poly-oxygenated chalcones with urea-hydroge n peroxide complex in THF in the presence of DBU and poly-(L)- or -(D) -leucine, followed by TBTH/AIBN catalysed ringopening, afforded beta-h ydroxydihydrochalcones in moderate to high enantiomeric excess and yie ld. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.