About: cis-trans Isomerization of silybins A and B     Goto   Sponge   NotDistinct   Permalink

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Description
  • Methods were developed and optimized for the preparation of the 2,3-cis- and the 10,11-cis-isomers of silybin by the Lewis acid catalyzed (BF3 center dot OEt2) isomerization of silybins A (1a) and B (1b) (trans-isomers). The absolute configuration of all optically pure compounds was determined by using NMR and comparing their electronic circular dichroism data with model compounds of known absolute configurations. Mechanisms for cis-trans-isomerization of silybin are proposed and supported by quantum mechanical calculations.
  • Methods were developed and optimized for the preparation of the 2,3-cis- and the 10,11-cis-isomers of silybin by the Lewis acid catalyzed (BF3 center dot OEt2) isomerization of silybins A (1a) and B (1b) (trans-isomers). The absolute configuration of all optically pure compounds was determined by using NMR and comparing their electronic circular dichroism data with model compounds of known absolute configurations. Mechanisms for cis-trans-isomerization of silybin are proposed and supported by quantum mechanical calculations. (en)
Title
  • cis-trans Isomerization of silybins A and B
  • cis-trans Isomerization of silybins A and B (en)
skos:prefLabel
  • cis-trans Isomerization of silybins A and B
  • cis-trans Isomerization of silybins A and B (en)
skos:notation
  • RIV/00216208:11310/14:10286796!RIV15-MSM-11310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(ED2.1.00/03.0058), P(GAP207/10/0288), P(LD13041), P(LH13097)
http://linked.open...iv/cisloPeriodika
  • May 8 2014
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 7372
http://linked.open...ai/riv/idVysledku
  • RIV/00216208:11310/14:10286796
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • silymarin; silybin; silibinin; isomerization; 11-cis-silybin; 10; 3-cis-silybin; 2 (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV
  • [2B27CA87ADEF]
http://linked.open...i/riv/nazevZdroje
  • Beilstein Journal of Organic Chemistry
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 10
http://linked.open...iv/tvurceVysledku
  • Bednárová, Lucie
  • Gažák, Radek
  • Křen, Vladimír
  • Kuzma, Marek
  • Novotná, Michaela
  • Marhol, Petr
  • Fuksová, Kateřina
  • Biedermann, David
  • Trouillas, Patrick
  • Di Meo, Florent
http://linked.open...ain/vavai/riv/wos
  • 000335520100001
issn
  • 1860-5397
number of pages
http://bibframe.org/vocab/doi
  • 10.3762/bjoc.10.105
http://localhost/t...ganizacniJednotka
  • 11310
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