A series of 'retinoid-like chalcones' and diverse derivatives relative to licochalcone A were synthesized from a new enaminone synthon. These syntheses occurred via a new aromatic annelation. These new derivatives have been tested in vitro as potential antimalarial agents. The 4-hydroxy-chalcone-like (compound 6a, derived from beta-ionone) exhibits a good and reproducible inhibitory effect on the in vitro culture of Plasmodium falciparum, with an IC 50 lower than 10 mu M for inhibition of 3 H-hypoxanthine uptake by parasites (respectively, 4.93 and 8.47 mu M for strains K1 and Thai). (c) 2005 Elsevier SAS. All rights reserved.
New aromatic annulation reaction via a C14 enaminone synthon: synthesis of ‘terpenoid-like chalcones’
作者:Alain Valla、Benoist Valla、Dominique Cartier、Régis Le Guillou、Roger Labia、Pierre Potier
DOI:10.1016/j.tetlet.2005.07.141
日期:2005.9
Diverse functionalized synthons from a new enaminone are reported. These synthons were easily obtained in a one pot process starting from a compound derived from β-ionone. A new annulation reaction of this C-14 compound with several anions led to new ‘terpenoid-like’ chalcones.