Osborn HM, Brome VA, Harwood LM, Suthers WG. Regioselective C-3-O-acylation and O-methylation of 4,6-O-benzylidene-beta-D-gluco- and galactopyranosides displaying a range of anomeric substituents.
Carbohydr Res 2001;
332:157-66. [PMID:
11434373 DOI:
10.1016/s0008-6215(01)00063-5]
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Abstract
The regioselective C-3-O-acylation and O-methylation of a range of 4,6-O-benzylidene-beta-D-gluco- and galactopyranosides has been studied. Regioselectivity is achieved by forming the copper chelate of the 2,3-diol using either sodium hydride and copper(II) chloride, or copper(II) acetylacetanoate, or copper(II) acetate, prior to introduction of the acylating or methylating agent.
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