n-pentenyl glycosides in the efficient assembly of the blood group substance B tetrasaccharide
作者:Uko E. Udodong、C. Srinivas Rao、Bert Fraser-Reid
DOI:10.1016/s0040-4020(01)81568-4
日期:1992.6
monosaccharide components of the human blood-group determinantB are prepared with full or partial protection as required. Assembly of the tetrasaccharide then requires only five steps, three to give, in sequence, the disaccharide (68%), trisaccharide (82%), and tetrasaccharide (91%), the other two steps being required to deprotect hydroxyl groups at the di- and tri-saccharide levels for the ensuing