RG13022 is a tyrosine kinase inhibitor; inhibits the autophosphorylation reaction of the EGF receptor (IC50: 4 μM).

6-Methoxykaempferol is a flavonoid found in brazilian propolis. 6-Methoxykaempferol has anti-proliferative activity against cancer cells, neuroprotective effects on isolated rat brain synaptosomes and reduces glutathione levels.

Neoanhydropodophyllol is a cyclolignan derivative, with antineoplastic activity. Neoanhydropodophyllol displays cytotoxicity against several cancer cells (leukemia, lung carcinoma and colon carcinoma).