This invention relates to certain heterocyclic compounds and their pharmaceutically acceptable salts, which are useful for sensitizing multidrug-resistant tumor cells to anticancer agents and multidrug resistant forms of malaria, tuberculosis, leishmania and amoebic dysentery to chemotherapeutants. The compounds and their pharmaceutically acceptable salts are also inhibitors of the active drug transport capability of P-glycoprotein which is encoded by the human MDR1 gene, as well as of certain other related ATP-binding-cassette transporters from eukaryotic and prokaryotic organisms (e.g., pfmdr from Plasmodium falciprum, and murine mdr1 and mdr3 gene products).
这项发明涉及某些
杂环化合物及其药用可接受的盐,这些化合物对于使多药耐药肿瘤细胞对抗癌药物和多药耐药形式的疟疾、结核病、利什曼病和阿米巴痢疾对化疗药物具有敏感性是有用的。这些化合物及其药用可接受的盐还是人类MDR1
基因编码的P-糖蛋白的活性药物转运能力的
抑制剂,以及来自真核和原核
生物(例如,来自疟原虫的pfmdr,以及小鼠mdr1和mdr3
基因产物)的某些其他相关的
ATP结合盒转运蛋白的
抑制剂。