132295-32-0Relevant academic research and scientific papers
REGIO- AND STEREOSELECTIVE OXYGENATION OF FLAVAN-3-OL-, 4-ARYLFLAVAN-3-OL-, AND BIFLAVANOID-DERIVATIVES WITH POTASSIUM PERSULPHATE
Mouton, C. Hendrik L.,Steenkamp, Jacobus A.,Young, Desmond A.,Bezuidenhoudt, Barend C. B.,Ferreira, Daneel
, p. 6885 - 6894 (2007/10/02)
The phenolic methyl ethers of flavan-3-ols, 4-arylflavan-3-ols, and (-)-fisetinidol-(4,8)-(+)-catechin biflavanoids are susceptible to regio- and stereoselective hydroxylation at C-4 in moderate to high yields with potassium persulphate/cupric sulphate in aqueous acetonitrile.The resultant 4-functionalized analogues are of both synthetic and degradative significance in condensed tannin chemistry.
HETEROCYCLES. XVIII. SYNTHESIS OF THE RACEMATES OF NATURALLY OCCURRING FLAVONOIDS
Takahashi, Hiroshi,Kubota, Yumiko,Igushi, Mieko,Fang, Lin,Onda, Masayuki
, p. 369 - 377 (2007/10/02)
Racemic aromadendrin and fustin have been stereoselectively synthesized.Reduction of the O-substituted derivatives of these flavanonols provides the corresponding derivatives of gleditsin, leucopelargonidin and mollisacacidin (leucofisetinidin).
Synthesis of Condensed Tannins. Part 11. Intramolecular Enantiomerism of the Constituent Units of Tannins from the Anacardiaceae: Stoicheiometric Control in Direct Synthesis: Derivation of 1H Nuclear Magnetic Resonance Parameters Applicable to
Viviers, Phillip M.,Kolodziej, Herbert,Young, Desmond A.,Ferreira, Daneel,Roux, David G.
, p. 2555 - 2562 (2007/10/02)
Tannins from the heartwoods of Schinopsis spp. (quebracho) and Rhus spp.(karee) represent mutual condensation products of their associated precursors (2S,3R,4S)(-)-leucofisetinidin, (2R,3S)-(+)-catechin and, to a minor extent, (2R,3R)-(-)-epicatechin.The
