In platinum-resistant A2780cis human ovarian cancer cells, thioxodihydroquinazolinone-19 is an inducer of apoptotic cell death. It acts by exhibiting a strong inhibitory effect in ovarian CSC-LCs in combination with cisplatin.
Fluproquazone is a quinazolinone derivative with potent antipyretic, analgesic, and anti-inflammatory effects. However, it was withdrawn during development due to liver toxicity.