10,11-Secoergoline

10,11-Secoergoline, also known as 3-indole or as α,N-tetramethylenetryptamine, is the structure of ergoline in which the bond between the 10 and 11 positions of the ring [system (chemistry)|ring system] has been broken to unconstrain the molecule. It is also a tryptamine with the amine cyclized into a piperidine ring connected to the α position.
A notable derivative of 10,11-secoergoline is CT-5252, which is an analogue of lysergic [acid diethylamide] with some of the same behavioral effects in animals but with much lower potency.