Gludantan
Gludantan, or gludantane, is an experimental antiparkinsonian agent of the adamantane group that was never marketed. It has also been described as a "psychotropic" and antidepressant. An analogue of gludantan, N-3,5-dimethylgludantan, is an inactive metabolite of memantine. Gludantan was developed in the Soviet Union and was first described by 1974.