Benzannulation of Indoles to Carbazoles and Its Applications for Syntheses of Carbazole Alkaloids
摘要:
A novel and efficient method for the benzannulation of indoles to carbzaoles is reported gamma-Carbonyl tert butylperoxide is applied as a new diene building block for the pi-extension of simple indoles. The synthetic utility of this method is demonstrated by concise and selective total syntheses of naturally occurring carbazole alkaloids, olivacine, and asteropusazole A.