(untitled) - Gabrielsen, B; Monath, T P; Huggins, J W; Kefauver, D F; Pettit, G R; Groszek, G; Hollingshead, M; Kirsi, J J; Shannon, W M; Schubert, E M; DaRe, J; Ugarkar, B; Ussery, M A; Phelan, M J (J. Nat. Prod., 1992)