Dosergoside
Dosergoside, also known as lyrgosin or N-sphingosine, is a dopamine agonist of the ergoline and lysergamide families which was never marketed. It is similar in chemical structure to lysergic acid diethylamide but is 9,10-dihydrogenated and features a sphingosine moiety in place of LSD's N,''N''-diethylamide group. The drug was first described in the literature by 1981.