Cucurbitane-Type Triterpenoids from Momordica charantia - Ma, Jun; Whittaker, Paul; Keller, Amy C.; Mazzola, Eugene P.; Pawar, Rahul S.; White, Kevin D.; Callahan, John H.; Kennelly, Edward J.; Krynitsky, Alexander J.; Rader, Jeanne I. (Planta Medica, 2010)