Valienamine 3, R = H, which is of interest, inter alia, as a building block of complex antibiotics and α-glucosidase inhibitors, contains a difficultly incorporatable allylic amino group. The key step of a new synthesis is the [2,3]-sigmatropic shift in a sulfimide generated from 1 and chloramine T to give a precursor of 2.
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Schmidt et al. (1987) studied this question.
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