Blattner R, Furneaux RH, Ludewig M. Syntheses of oligomannosides in solution and on a soluble polymer support: a comparison.
Carbohydr Res 2006;
341:299-321. [PMID:
16364272 DOI:
10.1016/j.carres.2005.11.027]
[Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2005] [Accepted: 11/28/2005] [Indexed: 11/26/2022]
Abstract
The alpha-(1-->6)-linked and the alpha-(1-->2)-linked linear mannotetraose glycosides and, respectively, and the branched mannopentaoside [R=CH2(CH2)2CH2Cl] were synthesised by conventional methods in solution, using trichloroacetimidate donors, and the products were obtained in 39%, 42% and 40% overall yield, respectively. For comparative purposes, the same two linear tetrasaccharides were prepared by use of MPEG as a soluble polymer support, the yields being 34% and 14%, respectively. An attempted MPEG-supported synthesis of the branched pentasaccharide was unsuccessful. The merits and shortcomings of oligosaccharide syntheses on MPEG are discussed.
Collapse