Modified Coumarins. 12. Synthesis of 3,4-Cycloannelated Coumarin β-D-Glucopyranosides

摘要

O-β-D-Glucopyranosides were synthesized using 3,4-cycloannelated hydroxycoumarins as aglycons. Phenolic hydroxyls were O-glycosylated via condensation of coumarin potassium salts with acetobromoglucose in homogeneous medium and in a liquid-liquid system using a phase-transfer catalyst.