Physalin C, a natural product derived from Physalis alkekengi, is classified as a secosteriod [seco-16,17]. It displays a yellow powder form and has a molecular formula of C28H36O10. This compound is notable for its multiple bioactivities, including anticancer, antifungal, and antiviral effects.
14-Anhydrodigitoxigenin is a cardenolide and a derivative of digitoxin.1 It reduces the activity of guinea pig heart Na+/K+-ATPase by 15% when used at a concentration of 10 μM.2