We have established an innovative protective approach that disrupts intermolecular interactions to enhance substrate reactivity. Specifically, diacetylimide protection of acetamide prevents the formation of hydrogen bonds, while the incorporation of tert-butyl groups on the aromatic protecting group disrupts π-stacking interactions, both of which culminate in heightened reactivity in glycosylations. We explored the synergistic implementation of these protective measures and applied them to the synthesis of 6-sulfo sialyl Lewis X.
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Yano et al. (2024) studied this question.
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