The invention relates to application of 1, 2, 3, 4, 6-O-pentagalloylglucose in preparation of a
medicine for resisting cholestatic liver diseases, and belongs to the technical field of
medicinal chemistry. The 1, 2, 3, 4, 6-O-pentagalloylglucose provided by the invention can be used for promoting
bile acid excretion by reducing WDR6
protein expression. In-vivo and in-vitro experiments prove that the 1, 2, 3, 4, 6-O-pentagalloylglucose can be used for remarkably relieving the symptom of the
cholestatic liver disease. In addition, the 1, 2, 3, 4, 6-O-pentagalloylglucose has no obvious toxic or
side effect, and has no obvious influence on the
liver function and the
kidney function. The 1, 2, 3, 4, 6-O-pentagalloylglucose has a wide anti-
cholestatic liver disease spectrum, and is suitable for various cholestatic liver diseases, such as primary biliary cholangitis (PBC),
primary sclerosing cholangitis (PSC) and the like.