1-[2-Hydroxy-6-[(2,3,4,6-tetra-O-acetyl-b-D-glucopyranosyl)oxy]phenyl] ethanone

Preparation by glycosation of 2,6-dihydroxyacetophenone with acetobromo-a-D-glucose,
? in the presence of cadmium carbonate in refluxing toluene for 20 h, with removal of generated water (71%), according to Dick’s method;
? in the presence of benzyltributylammonium chloride and potassium carbonate in chloroform at r.t. for 24 h (93%);
? in the presence of potassium hydroxide in aqueous acetone (38%), (32%).