Patent ID: 8916526

Claim:
A flavanone derivative of the formula: or a pharmaceutically acceptable salt thereof, wherein X is a glucose derivative having unsubstituted hydroxyl groups at positions 1, 4 and 6, and hydroxyl groups at positions 2 and 3 are substituted with a moiety of the formula —R 5 —Z; or a galactose derivative having unsubstituted hydroxyl groups at positions 1, 3 and 5, and hydroxyl groups at position 2 or 6 or both are substituted with a moiety of the formula —R 5 —Z; and Y is a hydroxyl group, wherein R 5 is —C(═O)— or an acyl group, and Z is an optionally substituted phenyl, wherein when said phenyl is substituted, the substituent is selected from the group consisting of an acyl group, an alkyl group, an alkenyl group, an alkynyl group, an alkyloxy group, a benzyloxy group, an amino group, a cyano group, a halogen, and a carboxyl group.