Figure 5From: Anti-malarial activity of indole alkaloids isolated from Aspidosperma olivaceumOff-line ESI-MS of the acid fraction from the leaves of Aspidosperma olivaceum . The ion at m/z 371 [M + H]+ corresponded to aspidoscarpine (1); the ion at m/z 326 [M + H]+ corresponded to demethoxy-aspidospermine (4), and the ion at m/z 265 [M + H]+ corresponded to N-methyl-tetrahydrolivacine (5).Back to article page