Modified Nucleosides from Nitrones: A New and Efficient Stereoselective Approach to Isoxazolidinyl Thymidine Derivatives.-A novel approach to the title derivatives such as (X) is presented. The key step is the highly diastereoselective addition of the enolate of (II) to the nitrone (I). The stereochemistry of (III) and (IV) is ascertained by X-ray analysis. -(MERINO, P.; FRANCO, S.; GARCES, N.; MERCHAN, F. L.; TEJERO, T.; Chem.
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