Reduction of ortho-aminobenzoyl-proline fluorescence and formation of pyrrolobenzodiazepine-5,11-dione - Hirata, Isaura Yoshico; Cezari, Maria Helena Sedenho; Boschcov, Paulo; Garratt, Richard Charles; Oliva, Glaucius; Ito, Amando S.; Spisni, Alberto; Franzoni, Lorella; Juliano, Luiz (Letters in Peptide Science, 1998)