Table 6.

Coupling of Benzoxazolyl Thioglycosides to 1,2;3,4-Di-O-isopropylidenegalactopyranose with Activation by Cu(OTf)₂ in CH₂Cl₂ at Room Temperature^a

Entry	Donor	Product, % yield, β:α ratio
1
2
3
4		No reactio (95% recovered donor)

^a)ROH = 1,2;3,4-di-O-ispropylidene-α-D-galactopyranose