Synthesis of selenium- and tellurium-containing nucleosides derived from uridine - Braga, Antonio Luiz; Severo Filho, Wolmar A.; Schwab, Ricardo S.; Rodrigues, Oscar Endrigo Dorneles; Dornelles, Luciano; Braga, Hugo C.; Lüdtke, Diogo, Seibert (Tetrahedron Letters, 2009)