Small Molecule Compound

A small molecule compound, which is characterized by being a compound represented by the following structural formula or stereoisomer, geometric isomer, tautomer, racemate, hydrate, solvate, a metabolite and a pharmaceutically acceptable salt or a prodrug thereof:

• where X1 and X2 are selected from carbon or nitrogen;
• G1 is aromatic carbocycle or heterocycle with six or more members;
• any one or more hydrogen atoms in the G1 ring are substituted by R1;
• and
• R1 is selected from hydrogen, halogen, alkyl, substituted alkyl, amino, amine, substituted amine, carboxyl, amido, substituted amido, ester, substituted carbonyl, cycloalkyl, substituted cycloalkyl, heterocycloalkyl, substituted heterocycloalkyl, aryl, substituted aryl, heteroaryl and substituted heteroaryl.