Communesin B is an alkaloid that has been found in Penicillium and has anticancer activity.[1] It is cytotoxic to A549, DU145, HCT116, HeLa, and MCF-7 cells (IC50s = 56, 45, 60, 47, and 34 µM, respectively).
References:
[1].Pompeo, M.M., Cheah, J.H., and Movassaghi, M.Total synthesis and anti-cancer activity of all known communesin alkaloids and related derivativesJ. Am. Chem. Soc.141(36)14411-14420(2019).