Definition: Benzo-indoles similar to CARBOLINES which are pyrido-indoles. In plants, carbazoles are derived from indole and form some of the INDOLE ALKALOIDS.
KT 5926 [ 9-hydroxy-9-methoxycarbonyl-8-methyl-14-n-propoxy-2,3,9,10-tetrahydro-8,11-epoxy-1H,8H,11H-2,7b,11a-triazadibenzo(a,g)cycloocta(cde)trinden-1-one,KT-5926,KT5926 ] indolocarbazole; structure given in first source