Abstract (EN):
Arenofurans have important biological and pharmacological activities. Compared to benzofurans, the reports on the synthesis of benzodifurans are rather limited. Here, we report the synthesis of a linear and an angular 3,3¿-bis(carboxymethyl)substituted benzodifuran and 4¿- carboxymethyl-substituted angelicins from phloroglucinol, using 4-halomethyl-substituted dipyrones as key intermediates in the synthetic route. This strategy shows that the stability of a pyrone ring depends on the type of substituent at C(4) and the conditions used. © 2009 Verlag Helvetica Chimica Acta AG.
Language:
English
Type (Professor's evaluation):
Scientific