Concise Syntheses of Dictyodendrins A and F by a Sequential C–H Functionalization Strategy

Syntheses of dictyodendrins A and F have been achieved using a sequential C–H functionalization strategy. The <i>N</i>-alkylpyrrole core is fully functionalized by means of a rhodium­(I)-catalyzed C–H arylation at the C3-position, a rhodium­(II)-catalyzed double C–H insertion at the C2- and C5-positions, and a Suzuki–Miyaura cross-coupling reaction at the C4-position. The syntheses of dictyodendrins A and F were completed by formal 6π-electrocyclization to generate the pyrrolo­[2,3-<i>c</i>]­carbazole core of the natural products