“…This compound and its derivatives are commonly found in plants of the genera Astilbe, Bergenia, Diospyros and Mallotus [2]. Their biological activity is quite diverse, including antioxidant, antiviral, antifungal, antitussive, antimalarial, anti-inflammatory, antiarrhythmic, anticancer, antiulcerogenic, antidiabetic, hepatoprotective, and neuroprotective [3,4]. Norbergenin (2) is a demethylated form of bergenin, which exhibits better antioxidant capacity in vitro [5][6][7].…”