The reactions of 2′-benzyloxyflavanones 9b,c with thallium(III) nitrate or iodobenzene diacetate in the presence of perchloric or sulfuric acid in trimethyl orthoformate was studied. Depending on the substitution pattern and the conditions, these compounds underwent 2-Aryl migration (9b → 11a) and/or ring contraction (9c → 10b + 11b) and dehydrogenation (9c → 12). A probable mechanism of these transformations is discussed.
|Number of pages||6|
|Journal||Natural product communications|
|Publication status||Published - jan. 1 2006|
ASJC Scopus subject areas
- Plant Science
- Drug Discovery
- Complementary and alternative medicine