- Zaragozic acids: a family of fungal metabolites that are picomolar competitive inhibitors of squalene synthase. Bergstrom, J.D., Kurtz, M.M., Rew, D.J., Amend, A.M., Karkas, J.D., Bostedor, R.G., Bansal, V.S., Dufresne, C., VanMiddlesworth, F.L., Hensens, O.D. Proc. Natl. Acad. Sci. U.S.A. (1993)