申请人:The United States of America as represented by the Secretary of the Army
公开号:US04617394A1
公开(公告)日:1986-10-14
Compounds of the class including 4-methyl-5-(unsubstituted and substituted phenoxy)-2,6-dimethoxy-8-(aminoalkylamino)quinolines as the free bases and pharmaceutically acceptable acid amine salts are described. The compounds are highly effective antimalarial agents which possess both tissue schizonticidal (radical curative) and blood schizonticidal (suppressive) acitivity. In addition, these drugs have significantly better therapeutic indices than primaquine which is the current tissue schizonticidal drug of choice. Primaquine possesses no useful blood schizonticidal activity at tolerated dose levels. The new 2-methoxy substituted compounds produce markedly less methemoglobin at effective dose levels and thus permit a higher degree of safety than analogs which are unsubstituted in the 2-position.
本类化合物包括4-甲基-5-(未取代和取代的苯氧基)-2,6-二甲氧基-8-(氨基烷基氨基)喹啉作为自由碱和药学上可接受的酸胺盐。这些化合物是高效的抗疟疾药物,具有组织无性繁殖体杀灭(根治)和血液无性繁殖体杀灭(抑制)活性。此外,这些药物的治疗指数显著优于目前选择的组织无性繁殖体杀灭药物-盐酸伯氨喹。在可耐受的剂量水平下,盐酸伯氨喹没有有用的血液无性繁殖体杀灭活性。新的2-甲氧基取代化合物在有效剂量水平下产生的甲血红蛋白明显较少,因此比2-位未取代的类似物具有更高的安全性。