Birnbaumins are a pair of yellow

indole alkaloid Indole alkaloids are a class of alkaloids containing a structural moiety of indole; many indole alkaloids also include isoprene groups and are thus called terpene indole or secologanin tryptamine alkaloids. Containing more than 4100 known differ ...

s first isolated from the flowerpot parasol mushroom. These alkaloids can cause

gastric ulcers Peptic ulcer disease is when the inner part of the stomach's gastric mucosa (lining of the stomach), the first part of the small intestine, or sometimes the lower esophagus, gets damaged. An ulcer in the stomach is called a gastric ulcer, while ...

if consumed.

References

Tryptamine alkaloids Mycotoxins found in Basidiomycota Amidines Oximes Hydroxylamines N-Monoalkyltryptamines Biological pigments Conjugated ketones Amides {{alkaloid-stub