altenusin

Altenusin is a natural nonsteroidal fungal metabolite, as a novel selective agonist of FXR with an EC50 value of 3.2 ± 0.2 μM.

Dehydroaltenusin is a selective eukaryotic DNA polymerase α inhibitor and a type of antibiotic produced by a fungus (IC50: 0.68 μM). Dehydroaltenusin inhibits mammalian pol α activity.

(±)-Dehydroaltenusin is an antibiotic that serves as a selective inhibitor of eukaryotic DNA polymerase α (pol α), exhibiting an IC50 of 0.68 μM. It can be isolated from the fungus Alternaria tenuis. The compound competitively inhibits the activity of DNA template primers (Ki: 0.23 μM) and non-competitively inhibits the activity of 2'-deoxyribonucleoside 5'-triphosphate substrates (Ki: 0.18 μM). Additionally, (±)-Dehydroaltenusin can induce S-phase cell cycle arrest and apoptosis in cancer cells and is applicable in research on cancers such as human adenocarcinoma.