55539-28-1Relevant academic research and scientific papers
Epimerisation of 4-Acetoxyflavans and Flavan-4-ols
Attwood, Michael R.,Brown, Ben R.,Pike, William T.
, p. 2229 - 2236 (2007/10/02)
5,7,3',4'-Tetramethoxyflavan-4β-ol reacts at 0 deg C with pyridine, ang a trace of acetic acid to give the 4β-acetoxy derivative but at 90 deg C the 4α-acetoxyflavan is formed.Either acetate when equilibrated with this acetylating agent yields a mixture o
Synthesis of 4-Substituted Flavans from 4α-Halogenoflavans
Brown, Ben R.,Guffogg, Stephen,Kahn, Michael L.,Smart, John W.,Stuart, Ian A.
, p. 1825 - 1829 (2007/10/02)
The reactions of flavan-4α- or -4β-ols unsubstituted in ring A with phosphorus or similar halides give 4α-halogenoflavans which react with a variety of nucleophiles (phenolate ions, thiophenolate ions, amines, and alcohols) yielding the corresponding 4-su
