Patent ID: 7648971

Claim:
A method of therapeutic therapy of thrombocytopenia in a human in need thereof which comprises administering to such human a therapeutically effective amount of a compound of the following formula: wherein AR is a polycyclic aromatic ring containing 3 to 16 carbon atoms and containing one or more heteroatoms, provided that when the number of carbon atoms is 3, the aromatic ring contains at least two heteroatoms and when the number of carbon atoms is 4, the aromatic ring contains at least one heteroatom, and the AR is optionally substituted with one or more substituents selected from the group consisting of: alkyl, trifluoromethyl and hydroxy; and R 1 and R 2 are independently selected from hydrogen and alkyl, provided that R 1 and R 2 are not both hydrogen; or a pharmaceutically acceptable salt thereof.