May-Jun 1993 Synthesis of Novel 2-Substituted-5-oxycoumarans via A Direct Route to 2,3-Dihydro-5-hydroxy-2-benzofuranacetic Acids Stefano Ceccarelli*, Patrizia De Vellis, Romolo Scuri and Sergio Zanarella* Centro Ricerche del Consorzio Biomedica Foscama-IRFI, via Morolese 87, 1-03013 Ferentino (FR), Italy Mario Brufani Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Università "La Sapienza'1, via degli Apuli 9, 1-00185 Roma, Italy Received July ...