Synthesis of α-aryloxy-2,4-dihydroxyacetophenone 4-O-β-D-glucopyranosides and their conversion into 3-aryloxy-7-glucosyloxychromones

The hydrolysis of the glycoside quisqualoside B, isolated from the herbAstragalus quisqualis Bunge, has given the new cycloartane triterpenoid quisquagenin, which has the structure of 20(R),24(S)-epoxycycloartane-3,16,25-triol.All-Union Scientific-Research Institute of Medicinal Plants, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 527–532, July–August, 1987.