benzotriazol-1-ol; dicyclohexyl-carbodiimide in dichloromethane T=20°C; 5 h;

alpha-D-glucopyranose; Candida parapsilosis ATCC 7330 in acetonitrile T=25°C; pH=7.2; 24 h; Enzymatic reaction; Overall yield = 58 percent;

1.1: triethylamine; chloroformic acid ethyl ester / dichloromethane / 1 h / 0 °C / |Inert atmosphere 1.2: 2 h / |Inert atmosphere 2.1: Candida parapsilosis ATCC 7330; alpha-D-glucopyranose / acetonitrile / 24 h / 25 °C / pH 7.2 / |Enzymatic reaction View Scheme

1.1: triethylamine; chloroformic acid ethyl ester / dichloromethane / 1 h / 0 °C / |Inert atmosphere 1.2: 2 h / |Inert atmosphere 2.1: Candida parapsilosis ATCC 7330; alpha-D-glucopyranose / acetonitrile / 24 h / 25 °C / pH 7.2 / |Enzymatic reaction View Scheme

1: Et3N / acetic acid 2: ethyl acetate View Scheme

1.1: pyridine 1-oxide; tetrachlorosilane / dichloromethane / 6 h / -76 °C 1.2: 2 h / 20 °C 2.1: oxygen / chloroform / 95 h / 40 °C / Resolution of racemate View Scheme

in ethyl acetate