Chemistry of the Genus Allium: Recent Results.

This report is divided into Four parts, each of them dealing with the recent results obtained by our research group on the Allium chemistry. We performed a chemical analysis by chromatographic and spectroscopic methods of three Allium species widely distributed in the Mediterranean area, A. ursinum L., A. neapolitanum Cyr., and A. pomlin L. In the first part, the structure and platelet antiaggregation activity of new flavonol glycosides from A. ursinum L. are described. In the second part, the structures of new flavonol glycosides of A. neapolitanum Cyr. are reported along with their platelet antiaggregation activity. The third part describes the new sapogenins and saponins of A. porrum L., and their cytotoxic and antiproliferative activity. Finally, the last part deals with the isolation of new antifungal dibenzofurans from A. porrum L..