Compounds and pharmaceutical uses thereof

A method of treating coronavirus infection, comprising administering to a subject in need thereof an effective amount of a composition, wherein the composition comprises a compound of Formula (I):

• or a pharmaceutically acceptable salt thereof,
• wherein Ring X is a 5 or 6 membered monocyclic ring, which optionally has one or two heteroatoms selected from the group consisting of N, O, P, and S;
• wherein at least one of R1, R2, R3, R4, R5, and R6, independently is of the formula:
• and the remaining R1, R2, R3, R4, R5, and R6 each, independently, is selected from the group consisting of —OH, —COOH,
• and absent;
• wherein n and o are, independently, 0 or 1;
• wherein m and p are, independently, 1, 2, 3, 4, or 5;
• and
• wherein the compound of Formula (I) has 2 to 35 galloyl moieties, inclusive.