Ibogalog
An ibogalog, or simplified ibogaine analogue, also known as a substituted 1,2,3,4,5,6-hexahydroazepino[4,5-b]indole (or simply substituted hexahydroazepinoindole), is a derivative of noribogaminalog and a simplified analogue of iboga alkaloids and related compounds such as ibogaine. They are tricyclic cyclized tryptamines and are closely related to the β-carbolines or harmala alkaloids. However, ibogalogs have a mostly-hydrogenated 7-membered azepine ring instead of the variably-saturated 6-membered pyridine ring present in β-carbolines. Relative to the iboga alkaloids, ibogalogs retain the indole and hydrogenated azepine rings, but the isoquinuclidine (2-azabicyclo[2.2.2]octane) ring system has been removed, simplifying the chemical structure.