13C-NMR study of methyl- and benzyl ethers of l-arabinose and oligasaccharides having l-arabinose at the reducing end. Synthesis of 2-O-β-d-glucopyranosyl-, 2-O-α-l-rhamnopyranosyl-, 3-O-β-d-glucopyranosyl-2- O-α-l-rhamnopyranosyl- and 4-O-β-d-glucopyranosyl-2-O-α-l-rhamnopyranosyl-l-arabinose

Abstract
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