A Photochemical Approach to Pyridopyrroloquinoline Derivatives as New Potential Anticancer Agents
Résumé
Indoloquinoline alkaloid cryptolepine and pyridocarbazole alkaloid ellipticine are of great interest because
in vitro and in vivo studies revealed their good cytotoxic properties. In order to obtain some biologically active
analogs of these compounds, we developped a synthesis based on the photocyclisation of tertiary N-methylated
enaminones derived from cyclopentane-1,3-dione and 3 or 6-aminoquinoline. The angular cyclised compounds
thus obtained were submitted to Beckmann rearrangement, preceded by the formation of a Z oxime. Finally, the
d -lactame ring was oxidized using 10% palladium/carbon in diphenylether and pyridopyrroloquinolines were
obtained. These compounds and the intermediate lactams and cyclopentanopyrroloquinolines were tested in vitro
on K 562 cells and A 2780 doxorubicine sensitive and resistant cells. All compounds were less effective than doxorubicine in sensitive cells but their activity wasn’t decreased by MDR resistance.
Origine | Fichiers éditeurs autorisés sur une archive ouverte |
---|
Loading...