Xylobiose sequestration in a helicalaromaticoligoamidecapsule was evidenced by circular dichroism, NMR spectroscopy, and crystallography. The preparation of the 5 kDa oligoamide sequence was made possible by the transient use of acid‐labile dimethoxybenzyl tertiary amide substituents that disrupt helicalfolding and prevent double helix formation. Binding of other disaccharides was not detected