Table 2. Glycosylation Reactions with l-glycero-d-gluco Donor 7c and d-glycero-d-gluco Donor 7d.

^aAll reactions were carried out at −78 °C with activation by 0.2 equiv of TMSOTf. The donor-to-acceptor ratio is 1.0:1.2 with a 0.15 M concentration of donor.

^bIsolated yield.

^cAnomeric ratios were determined by integration of the anomeric signals in the ¹H NMR spectra of the crude reaction mixtures.

^dWhen this reaction was conducted on a scale of ∼1 g, 21 was obtained in a 92% isolated yield with an α:β ratio of 1:3.