Na⁺/K⁺-ATPase-Targeted Cytotoxicity of (+)-Digoxin and Several Semisynthetic Derivatives.

ABSTRACT: (+)-Digoxin (1) is a well-known cardiac glycoside long used to treat congestive heart failure and found more recently to show anticancer activity. Several known cardenolides (2-5) and two new analogues, (+)-8(9)-β-anhydrodigoxigenin (6) and (+)-17-epi-20,22-dihydro-21α-hydroxydigoxin (7), were synthesized from 1 and evaluated for their cytotoxicity toward a small panel of human cancer cell lines. A preliminary structure-activity relationship investigation conducted indicated that the C-12 and C-14 hydroxy groups and the C-17 unsaturated lactone unit are important for 1 to mediate its cytotoxicity toward human cancer cells, but the C-3 glycosyl residue seems to be less critical for such an effect. Molecular docking profiles showed that

SUBMITTER: Ren Y 

PROVIDER: S-EPMC7243443 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature