A total synthesis of carbazomycin G (1) has been newly completed in seven steps. The 1,3-dioxygenated carbazole (4) via the 3-methoxy-1-methoxymethyloxycarbazole (11) as a synthetic precursor was synthesized by using the allene-mediatedelectrocyclicreaction of a 6π electron system generating from the 2-propargylindole derivative (10), which was derived from the 3-vinylindole (8) in three steps. Finally