1: With N,N-dimethyl-formamide in chloroform-d1 T=0°C; 2: With N-iodo-succinimide; trimethylsilyl trifluoromethanesulfonate in chloroform-d1 T=0°C; Temperature;

1: p-methylphenyl 3,4,6-tri-O-benzyl-2-deoxy-1-thio-α-D-glucopyranoside; N,N-dimethyl-formamide in chloroform-d1 T=20°C; 2: trimethylsilyl trifluoromethanesulfonate With N-iodo-succinimide in chloroform-d1 T=20°C;