Cervantes, Humberto; Khac, Duc Do; Fetizon, Marcel; Guir, Frederic; Beloeil, Jean-Claude; Lallemand, Jean-Yves Tetrahedron, 1986, vol. 42, # 13 p. 3491 - 3502 doi: 10.1016/S0040-4020(01)87316-6