130322-27-9Relevant academic research and scientific papers
Stereoselective synthesis of flavonoids. Part 7. Poly-oxygenated β- hydroxydihydrochalcone derivatives
Nel, Reinier J. J.,Van Rensburg, Hendrik,Van Heerden, Pieter S.,Coetzee, Johan,Ferreira, Daneel
, p. 9727 - 9736 (2007/10/03)
Epoxidation of a series of poly-oxygenated chalcones with urea-hydrogen peroxide complex in THF in the presence of DBU and poly-(L)- or -(D)-leucine, followed by TBTH/AIBN catalysed ring opening, afforded [β- hydroxydihydrochalcones in moderate to high en
Enantioselective synthesis of flavonoids. Part 5. Poly-oxygenated β- hydroxydihydrochalcones
Nel, Reinier J.J.,Van Heerden, Pieter S.,Van Rensburg, Hendrik,Ferreira, Daneel
, p. 5623 - 5626 (2007/10/03)
Epoxidation of a series of poly-oxygenated chalcones with urea-hydrogen peroxide complex in THF in the presence of DBU and poly-(L)- or -(D)-leucine, followed by TBTH/AIBN catalysed ringopening, afforded β- hydroxydihydrochalcones in moderate to high enan
Stereoselective synthesis of flavonoids. Part 4. Trans- and cis-dihydroflavonols
Van Rensburg, Hendrik,Van Heerden, Pieter S.,Bezuidenhoudt, Barend C.B.,Ferreira, Daneel
, p. 14141 - 14152 (2007/10/03)
Epoxidation of a series of poly-oxygenated chalcones with H2O2 in the presence of poly-α-aminoacids yielded chiral aromatic oxygenated oxiranes in moderate to high optical yields. Lewis acid-catalysed phenylmethanethiol ringopening o
ENANTIOSELECTIVE SYNTHESIS OF FLAVONOIDS. PART 1. POLY-OXYGENATED CHALCONE EPOXIDES
Augustyn, Jan A. N.,Bezuidenhoudt, Barend C. B.,Ferreira, Daneel
, p. 2651 - 2660 (2007/10/02)
Epoxidation of a series of poly-oxygenated chalcones with H2O2 in the presence of poly-α-aminoacid catalysts afforded chiral aromatic oxygenated epoxides in moderate to high optical yields; their absolute configurations were determined by CD spectroscopy.These chalcone epoxides could, in principle, be used as chirons for enantiomerically enriched dihydroflavonols.
