Add time:08/17/2019         Source:sciencedirect.com

C-Glycoamino acids bearing a variety of sugar moieties were prepared by the hetero-Diels–Alder addition of ethyl 2-nitrosoacrylate to exo-glycals. The reaction proceeds smoothly to yield spirocyclic oxazines that can be converted into useful products by several hydrogenolytic techniques.

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