Table 2. The effect of a 3-O- and 6-O-acyl protection on the stereoselectivity of glucosylation ^a .

Entry	Donor	Acceptor	Yield, α/β ratio
1a	30		89%, 5.3/1
2a	30		93%, 11.2/1
3a	31		93%, 16.4/1
4b	32	34	59%, 6.8/1
5c	33	35	96%, 5.9/1

^aConditions: ^aMeOTf, CH₂Cl₂, AW-300, –35 → –15 °C; ^bTf₂O, DTBMP, CH₂Cl₂, –78 → 0 °C; ^cMeOTf, CH₂Cl₂, AW-300, 20 °C.