Synthesis of α-<scp>d</scp>-Gal<i>p</i>-(1→3)-β-<scp>d</scp>-Gal<i>f</i>-(1→3)-<scp>d</scp>-Man, a Terminal Trisaccharide of <i>Leishmania</i> Type-2 Glycoinositolphospholipids
作者:Lucia Gandolfi-Donadio、Carola Gallo-Rodriguez、Rosa M. de Lederkremer
DOI:10.1021/jo016290z
日期:2002.6.1
The synthesis of alpha-D-Galp-(1-->3)-beta-D-Galf-(1-->3)-D-Man, present in the type-2 glycoinositolphospholipids and in the core of the lipophosphoglycan of Leishmania, is described. The glycosyl aldonolactone approach, followed by reduction of the lactone with diisoamylborane, was utilized for the introduction of the internal galactofuranosyl unit and the trichloroacetimidate method for the O-glycosidation reaction. A high-yield synthesis of the O-D-Galf-(1-->3)-D-Man unit, also present in the lipopeptidophosphoglycan of Trypanosoma cruzi, is reported.