Graf, Ernest; Hosseini, Mir Wais; Ruppert, Romain Tetrahedron Letters, 1994 , vol. 35, # 42 p. 7779 - 7782 Title/Abstract Full Text View citing articles Show Details Bockstahl, Frederic; Graf, Ernest; Hosseini, Mir Wais; Suhr, Dominique; De Cian, Andre; Fischer, Jean Tetrahedron Letters, 1997 , vol. 38, # 43 p. 7539 - 7542