Antitrypanosomal, Antileishmanial, and Antimalarial Activities of Quaternary Arylalkylammonium 2-Amino-4-Chlorophenyl Phenyl Sulfides, a New Class of Trypanothione Reductase Inhibitor, and of <i>N</i>-Acyl Derivatives of 2-Amino-4-Chlorophenyl Phenyl Sulfide
作者:Seheli Parveen、Mohammed O. F. Khan、Susan E. Austin、Simon L. Croft、Vanessa Yardley、Peter Rock、Kenneth T. Douglas
DOI:10.1021/jm050819t
日期:2005.12.1
microM). The quaternized analogues of the 2-chlorophenyl phenyl sulfides had strong antitrypanosomal and antileishmanial activity in vitro against T. brucei rhodesiense STIB900, T. cruzi Tulahuan, and Leishmania donovani HU3. The N-acyl-2-amino-4-chlorophenyl sulfides were active against Plasmodium falciparum. The phenothiazine and diaryl sulfide quaternary compounds were also powerful antimalarials, providing
氯丙嗪的2-氨基-4-氯苯基苯基硫醚类似物的氮原子的季铵化可改善抑制作用,抑制作用约为40倍(3',4'-二氯苄基-[5-氯-2-苯基硫烷基-苯基氨基)-丙基]-二甲基氨基鎓氯化物抑制了克氏锥虫的锥虫硫醇还原酶,线性竞争Ki值为1.7 +/- 0.2 microM。分子建模通过以下方式解释了对接方向和能量:(i)Z位疏水口袋的参与(大致由F396',P398'和L399'界定),(ii)阳离子氮与Glu-466'的离子相互作用或-467'。一系列N-酰基-2-氨基-4-氯苯基硫化物显示出混合抑制作用(Ki,Ki'= 11.3-42.8 microM)。2-氯苯基苯硫醚的季铵化类似物在体外对布鲁氏罗氏梭菌STIB900,克鲁兹·图拉欢和杜氏利什曼原虫HU3具有很强的抗锥虫和抗疟疾活性。N-酰基-2-氨基-4-氯苯基硫化物对恶性疟原虫具有活性。吩噻嗪和二芳基硫醚季铵化合物也是强大的抗疟药,为抗疟药设计提供了新的结构框架。