- A potent nonpeptide cholecystokinin antagonist selective for peripheral tissues isolated from Aspergillus alliaceus. Chang, R.S., Lotti, V.J., Monaghan, R.L., Birnbaum, J., Stapley, E.O., Goetz, M.A., Albers-Schönberg, G., Patchett, A.A., Liesch, J.M., Hensens, O.D. Science (1985)