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|Title:||Synthesis of flavonoid-type compounds from methyl dehydroabietates|
|Author:||Monteiro, Silvia M. C. S.|
Silvestre, Armando J. D.
Silva, Artur M. S.
Cavaleiro, José A. S.
|Abstract:||The synthesis of new flavone-type compounds bearing several chiral centres, 12- and 14-(2'-chromonyl)dehydroabietates, are reported. This synthesis started from the aldol condensation of methyl 12- and 14-formyldehydroabietates with 2'-hydroxyacetophenones in order to prepare the corresponding chalcone-type compounds, which were then transformed in the expected flavone-type compounds by cyclodehydrogenation with DMSO and a catalytic amount of iodine. All compounds were exhaustively characterised by NMR and MS techniques.|
|Appears in Collections:||DQ - Artigos|
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