( ) rasfonin

(-)-Rasfonin is a fungal metabolite that has been found in T. terrophilus.1 It inhibits proliferation of mouse splenocytes induced by concanavalin A and LPS (IC50s = 0.7 and 0.5 μg ml, respectively). References1. Fujimoto, H., Okamoto, Y., Sone, E., et al. Eleven new 2-pyrones from a fungi imperfecti, Trichurus terrophilus, found in a screening study guided by immunomodulatory activity. Chem. Pharm. Bull. (Tokyo) 53(8), 923-929 (2005).