Straightforward Synthesis of Diverse 1-Deoxyazapyranosides via Stereocontrolled Nucleophilic Additions to Six-Membered Cyclic Nitrones

[摘要]：A systematic study of diastereoselective nucleophilic addition of Grignard reagents to six-membered chiral tri-O-benzyl cyclic nitrones is described. With all eight chiral cyclic nitrones and asymmetric reaction conditions in hand, a practical methodology is established for the preparation of diverse 1-deoxyazapyranosides bearing various stereogenic centers.

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