Carbazole and its hybrid compounds were considered as very significant type of nitrogen containing heterocyclic compounds that are abundant in nature. The Carbazole moiety is constituent of a so many naturally occurring biologically active substances such as murrayafoline and carbazomycins. Numerous carbazole compounds such as oxazinocarbazoles, benzocarbazoles, pyridocarbazoles, tetrahydrocarbazoles, furo-carbazoles, pyrrolocarbazoles, oxazolinylcarbazoles,...