Indole Alkaloids
There are over 1,200 indole alkaloids with diverse medicinal applications. Ergotamine, from the ergot fungus has been used as a vasoconstrictor for migraine headaches. Serotonin, tryptamine (like tryptophan) and adrenaline are all indole alkaloids. Most of them are found in the Dogbane, Madder and Logania families.- (Epel)
Unprecedented Utilization of Pelargonidin and Indole for the Biosynthesis of Plant Indole Alkaloids.