Diketopiperazines from Cultures of the FungusColletotrichum gloesporoides

Abstract Five diketopiperazines, cyclo-(L-prolyl-L-glycine), cyclo-(L-prolyl-L-valine), cyclo-(L-leucyl-L-proline), cyclo-(L-alanyl-L-proline) and cyclo-(L-phenylalanyl-L-proline), were isolated from the phytopathogenic fungus Colletotrichum gloesporoides. Key Words: Colletotrichum gloesporoidesphytotoxic fungal metabolites cyclo-(L-prolyl-L-glycine) cyclo-(L-prolyl-L-valine) cyclo-(L-leucyl-L-proline) cyclo-(L-alanyl-L-proline) and cyclo-(L-phenylalanyl-L-proline).