Synthesis of a nonavalent mannoside glycodendrimer based on pentaerythritol

被引:24
作者
Al-Mughaid, H [1 ]
Grindley, TB [1 ]
机构
[1] Dalhousie Univ, Dept Chem, Halifax, NS B3H 4J3, Canada
关键词
D O I
10.1021/jo052045u
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A nonavalent glycodendrimer bearing terminal alpha-D-mannopyranoside units has been synthesized with a convergent approach. Terminal trivalent mannoside dendrons bearing p-halophenyl ethers were prepared by glycosylation of pentaerythritol derivatives having three 2-hydroxyethyl ether substituents. Two efficient routes were developed for the synthesis of the pentaerythritol-based core (17), which has three terminal propargyl ethers. Conditions were found under which the triple Sonogashira coupling reaction of the dendron and the tri-O-propargyl ether (17) proceeded efficiently. The product was deprotected and it and precursors were fully characterized by NMR spectroscopy and FT-ICR mass spectrometry.
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收藏
页码:1390 / 1398
页数:9
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