Methods of treating melanoma include administering a compound of Structure I, a tautomer of the compound, a pharmaceutically acceptable salt of the compound, a pharmaceutically acceptable salt or the tautomer, or a mixture thereof to a subject. The compound, tautomer, salt of the compound, salt of the tautomer, or mixture thereof may be used to prepare medicaments for treating metastatic cancer. The variable A has the values defined herein.
                            治疗
黑色素瘤的方法包括向受试者施用结构I的化合物、化合物的互变异构体、化合物的药用可接受盐、互变异构体的药用可接受盐或两者的混合物。该化合物、互变异构体、化合物的盐、互变异构体的盐或两者的混合物可用于制备治疗转移性癌症的药物。变量A具有定义在此处的值。