Efficient Generation of β-L-Rhamnosidic Linkages by the 2-Ulosyl Donor Approach: Synthesis of a Trisaccharide with a Central β-L-Rhamnose Unit
作者:Frieder W. Lichtenthaler、Thomas Metz
DOI:10.1002/ejoc.200300149
日期:2003.8
highly useful as indirect β-L-rhamnosyl donors: they undergo β-specific glycosidations under Koenigs-Knorr conditions, and the 2-keto group of the resulting 6-deoxy-β-L-hexosiduloses is reduced with high β-L-rhamno selectivity. The straightforward application of this 2-ulosyl donor approach for the synthesis of β-L-rhamnose-containing di- and trisaccharides is demonstrated. (© Wiley-VCH Verlag GmbH
已经开发了从 L-鼠李糖生产各种封闭的 6-脱氧-α-L-阿拉伯-2-酮己糖基溴化物的实用程序。这些化合物作为间接 β-L-鼠李糖基供体非常有用:它们在 Koenigs-Knorr 条件下进行 β-特异性糖苷化,所得 6-脱氧-β-L-己糖苷糖的 2-酮基被高 β- L-鼠李糖选择性。证明了这种 2-ulosyl 供体方法在合成含 β-L-鼠李糖的二糖和三糖中的直接应用。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)