A comparative study of different glycosylation methods for the synthesis of d-mannopyranosides of Nα-fluorenylmethoxycarbonyl-trans-4-hydroxy-l-proline allyl ester
作者:Dong Jun Lee、Renata Kowalczyk、Victoria J. Muir、Phillip M. Rendle、Margaret A. Brimble
DOI:10.1016/j.carres.2007.08.015
日期:2007.12
The synthesis of N alpha-fluorenylmethoxycarbonyl-trans-4-hydroxy-4-O[(2,3,4,6-tetra-O-acetyl)-alpha-D-mannopyranosyl]-L-proline allyl ester and N alpha-fluorenylmethoxycarbonyl- trans-4-hydroxy-4- O-[(2,3,4,6-tetra- O-benzoyl) -alpha-D -mannopyranosyl]-L -proline allyl ester is described. Glycosylation using Konigs-Knorr conditions with a benzoyl protected glycosyl donor provided the optimum method. Removal of the allyl ester gave two mannosylated building blocks suitable for solid phase glycopeptide synthesis. (c) 2007 Elsevier Ltd. All rights reserved.