(+)-Afzelechin has a neuroprotective effect on the glutamate-induced neurotoxicity in HT22 cells, it has ABTS cation radical scavenging effects with IC50 values of 23.7 microM.

5-[(1H-indol-3-yl)methylidene]imidazolidine-2,4-dione ((4Z)-4-(1H-indol-3-ylmethylidene)-4H-imidazole-2,5-diol) is a marine derived natural products found in Leptopsammia pruvoti.

Deoxy euphorbia factor L1 is a natural product found in the seeds of Euphorbia lathyris L.