In vitro and in vivo antimalarial properties of isostrychnopentamine, an indolomonoterpenic alkaloid from Strychnos usambarensis. - Frederich,M.; Tits,M.; Goffin,E.; Philippe,G.; Grellier,P.; De Mol,P.; Hayette,M.P.; Angenot,L. (Planta Med, 2004)