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2005
Carbohydrates
U 0500
Stereoselective Glycosylation of exo-Glycals by Microwave-Assisted Ferrier Rear— exo-Glycals containing allylic carbonate groups (I) serve as efficient
26- 125 rangement.
glycosyl donors in the microwave-assisted glycosylation reaction. The reaction proceeds with excellent stereoselectivity to give α-glycosides (III) and (V). Interestingly,
exo-glycals (I) show higher reactivity as compared to endo-glycals like (VI) as well as
common glycosides. The reactivity of endo-glycals, however, can be improved by use
of InCl3 as catalyst. — (LIN, H.-C.; CHANG, C.-C.; CHEN, J.-Y.; LIN*, C.-H.;
Tetrahedron: Asymmetry 16 (2005) 2, 297-301; Inst. Biol. Chem., Acad. Sin.,
Taipei 11529, Taiwan; Eng.) — Mischke
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