was protected by selective benzoylation to allow subsequent glucuronidation of C4′-OH (naringenin) or C3′-OH (hesperetin) (B-ring). On the other hand, the selective debenzoylation at C7-OH of the perbenzoylated flavanone aglycones allowed glucuronidation at the same position (A-ring). After careful deprotection, the target compounds were purified and characterized by nuclear magnetic resonance and mass