反应详情

To a stirred solution of 25 g of 4-aminophenyl 2,3,6-tri-O-acetyl-4-O-(2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl)-1-thio-β-D-glucopyranoside in 250 ml of a dry mixture of pyridine-acetonitrile (1:1) was added a solution of 3.55 g of suberoyl chloride in 10 ml of acetonitrile. This mixture was allowed to stand, under argon, for 18 hours. An additional 0.2 ml of suberoyl chloride was added, the solution was allowed to stand for an additional 18 hours and was then poured into 2 liters of water. After stirring for 15 minutes, the oil was separated and extracted into 500 ml of dichloromethane. The extract was washed twice with 500 ml portions of 0.5 N hydrochloric acid, then with saturated aqueous sodium chloride solution, dried and taken to dryness, giving 28 g of the desired product as a white foam.

1. waitto stand for an additional 18 hours
2. customthe oil was separated
3. extractionextracted into 500 ml of dichloromethane
4. washThe extract was washed twice with 500 ml portions of 0.5 N hydrochloric acid
5. dry with materialwith saturated aqueous sodium chloride solution, dried