Cyclopenin (CAS 19553-26-5)

Cyclopenin is one of an unusual family of benzodiazepine metabolites produced by a number of Penicllium species. Often mistakenly referred to as a mycotoxin, cyclopenin shows little toxicity against mammalian cells, bacteria or fungi in vitro. Cyclopenin is an intermediate in the biosynthesis of the viridicatins, strong inhibitors of the tumor necrosis factor alpha (TNFα)-induced replication of human immunodeficiency virus (HIV).

References

1. Studies in the biochemistry of microorganisms. 93. Cyclopenin, a nitrogen-containing metabolic product of Penicillium cyclopium Westling. Bracken A. et al. Biochem J. 1954, 57, 587.
2. Isolation and characterization of the fungal metabolite 3-O-methylviridicatin as an inhibitor of tumour necrosis factor alpha-induced human immunodeficiency virus replication. Heguy A. et al. Antivir. Chem. Chemother. 1998, 9, 149.