Formation of Diketopiperazines by Penicillium italicum Isolated from Oranges

Peter M. Scott, Barry P. C. Kennedy, Joost Harwig, Y-K. Chen
1974 Applied microbiology  
Prolyl-2-(1',1'-dimethylallyl)tryptophyldiketopiperazine and 12,13-dehydroprolyl-2-(1',1'-dimethylallyl)tryptophyldiketopiperazine, known metabolites of Aspergillus ustus, were produced in low yield by Penicillium italicum in liquid culture and on unsterilized orange peel.
doi:10.1128/aem.28.5.892-894.1974 fatcat:xvdaxovarncijcegrpplsj4g34