A total synthesis of the complex C-aryl glycoside isokidamycin was achieved during an effort to construct the natural product kidamycin, a member of the pluramycin family of antitumor antibiotics. The angolosamine carbohydrate was appended, along with annelation of a benzene ring by the implementation of the Martin group's silicon tether-directed, intramolecular aryne-furan cycloaddition strategy. The vancosamine-derived carbohydrate was then installed by an O -> C-glycoside rearrangement. A novel protocol for the carbonylative cross-coupling of ortho-disubstituted aryl iodides with aryl boronic acids and alkynyl zinc reagents was also discovered during efforts to introduce the pyranone ring of kidamycin. The reaction proved general, as a variety of electron-rich and electron-poor aryl iodides, boronic acids, and alkynyl-zinc reagents participated in the cross-coupling. / text

La kidamycine, première molécule de la famille des pluramycines isolée de bactéries Streptomyces pluricolorescens, reste depuis sa découverte en 1956 un défi synthétique pour les chimistes organiciens. Le rempart principal bloquant la synthèse de cette famille de molécules réside dans l'introduction régio- et stéréosélective ainsi que dans l'aménagement fonctionnel de deux unités.Nous nous proposons ici de mettre au point une nouvelle méthodologie d’aryl-C-glycosylation régio- et stéréospécifique par couplage de Mizoroki-Heck inscrite dans une stratégie de synthèse originale et convergente développée pour la première synthèse totale de la kidamycine. / Kidamycin, former member of pluramycin family isolated from Streptomyces pluricolorescens, remains a challenging synthetic target for organic chemists since its discover in 1956. The last bastion slowing down the syntheses of this latter family is the regio- and stereoselective introduction as well as the functionnalization of both aryl-C-glycosidic subunits.We propose to develop herein a regio- and stereospecific aryl-C-glycosylation reaction via Mizoroki-Heck cross coupling enshrined in a novel and convergent strategy for the first total synthesis of kidamycin.