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[摘要]:A de novo approach for the synthesis of biol. important C-galactosides, e.g. I, has been achieved via use of an acyclic galactose-derived b-keto ester. The b-keto ester enolate serves as a C-nucleophile and reacts with primary alkyl halides and Michael acceptors to generate alkylation products that can be converted into b-C-galactosides and C-disaccharide mimics with high stereoselectivity. |
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