Facilesyntheses of imperative carbazole alkaloids carbazomycinA, carbazomycin B, hyellazole, chlorohyellazole, and clausenalineD have been demonstrated starting from readily available Boc-protected3-formylindole and dimethyl maleate. The suitably substituted aromaticrings have been designed comprising three/four significant C–Cbond forming reactions. The competent Wittig reaction, selective monoalkylations,one-pot regioselective Weinreb amide formation and Boc-deprotection,well designed Grignard reactions, dehydrative intramolecular cyclizations,and Baeyer–Villiger rearrangement of aromatic aldehydes werethe main features. [ABSTRACT FROM AUTHOR]