A Late-Stage Functionalization Approach to Derivatives of the Pyrano[3,2- a]carbazole Natural Products.

Site-selective late-stage functionalizations of a pyrano[3,2- a]carbazole core related to the murrayamine natural products is reported. Specifically, selective C3 and C6 bromination has been achieved as well as C8 borylation. These functionalizations set the stage for access to a variety of natural products as well as their derivatives.