... and Novel Synthesis of l,6-Naphthyridin-2(li?)-ones Baldev Singh* and George Y. Lesher Department of Medicinal Chemistry, Sterling Research ... Heterocyclic Chem., 27, 2085 (1990 ... CII3 238-240 C2H5 186-188 (CH2)2CH3 201-203 [a] -{J 261-263 -0-Br 278-280 hQkci 282-284 ...