Novák, P.; Číhalová, S.; Otmar, M.; Hocek, M.; Kotora, M. Co- and homocyclotrimerization reactions of protected 1-alkynyl-2-deoxyribofuranose. Synthesis of C-nucleosides, C-di- and C-trisaccharide analogues. Tetrahedron 2008, 64 (22), 5200-5207 DOI: 10.1016/j.tet.2008.03.046.