Tags: Chemical Compound, Chemical Substance.
Velleral (228-trimethyl-33a88a-tetrahydro-1H-azulene-56-dicarbaldehyde) is a sesquiterpene dialdehyde found in certain mushrooms like Lactarius torminosus and Lactarius vellereus after which it was named. The compound is thought to be part of a chemical defense system that protects the mushrooms against predation. First isolated in 1969 and characterized structurally in 1973 velleral has antimicrobial activity. Several syntheses have been devised.