Hydroquinone compounds, preparation methods therefor, and use in anti-tumor or immunomodulation therapy

An anti-tumor drug or immunomodulation drug, comprising an effective amount of a compound of formula I,

• wherein X is C═O;
• Y is absent;
• R is selected from any one of the following groups:
• 1) a substituted or unsubstituted cycloalkyl group having at least three carbon atoms,
• 2) a substituted or unsubstituted alkenyl group or alkynyl group having at least two carbon atoms, wherein a substituent is an amino group, a nitro group, a carbonyl group, amino acid derivatives, a natural flavorne, a natural alkaloid, a polyethylene glycol, a polyglutamic, acid or a polysaccharide,
• 3) an unsubstituted aryl or heteroaryl group having at least 4 carbon atoms, wherein the unsubstituted aryl or heteroaryl group is a naphthalene ring, an indole, a pyridine, a purine, a pyrimidine, an imidazole, a furan, or a pyrrole,
• 4) a substituted aryl or heteroaryl group having at least 4 carbon atoms, wherein the substituted aryl or heteroaryl group is a naphthalene ring, an indole, a purine, a pyrimidine, an imidazole, a furan or a benzoheterocycle, and wherein a substituent is a halo, an amino group, a nitro group, an ester group, a carbonyl group, amino acid derivatives, a natural flavone, a natural alkaloid, a polyethylene glycol, a polyglutamic acid, or polysaccharide,
• or pharmaceutically acceptable salts thereof, hydrates thereof, solvates thereof, or a pharmaceutical composition thereof as an active component.