作者:Francislene J. Martins、Rebeca Mol Lima、Juliana Alves dos Santos、Patricia de Almeida Machado、Elaine Soares Coimbra、Adilson David da Silva、Nádia Rezende Barbosa Raposo
DOI:10.2174/1570180812666141216205601
日期:2015.10.30
This work describes the synthesis and biological properties of a series of 2- and 4-
pyridinylimines and pyridinylhydrazones. All compounds were evaluated in vitro against two species
of Leishmania. The antioxidant activity and the toxic effect against murine peritoneal macrophages of the compounds
were also performed. The synthesized compounds showed significant antileishmanial and antioxidant activities. For the
antileishmanial assay, compounds 1a, 1d and 2a were active against the Leishmania species, and compound 2a was the
most effective on promastigotes (IC50 value = 3.38 µM) and amastigotes (IC50 value = 18.96 µM) of L. amazonensis. Only
compound 2a exhibited toxicity against murine peritoneal macrophages (CC50 of 54.35 µM). However, this compound
was 2.8 times more destructive to the intracellular amastigotes than the host cell. Regarding the antioxidant activity, compounds
1a and 2a exhibited a strong antioxidant effect (IC50 values of 8.79 µM and 19.82 µM), compound 1a being better
than the L-ascorbic acid (9.48 µM), used as reference.
本研究介绍了一系列 2-和 4-吡啶亚胺及吡啶肼的合成及其生物学特性。所有化合物都针对两种利什曼原虫进行了体外评估。此外,还对这些化合物的抗氧化活性和对小鼠腹腔巨噬细胞的毒性作用进行了评估。合成的化合物显示出显著的抗利什曼病和抗氧化活性。在抗利什曼病菌试验中,化合物 1a、1d 和 2a 对利什曼病菌具有活性,其中化合物 2a 对亚马逊利什曼原虫(IC50 值 = 3.38 µM)和非原虫(IC50 值 = 18.96 µM)最为有效。只有化合物 2a 对小鼠腹腔巨噬细胞表现出毒性(CC50 为 54.35 µM)。不过,这种化合物对细胞内母细胞的破坏力是宿主细胞的 2.8 倍。在抗氧化活性方面,化合物 1a 和 2a 表现出很强的抗氧化效果(IC50 值分别为 8.79 µM 和 19.82 µM),化合物 1a 的抗氧化效果优于作为参考的 L-抗坏血酸(9.48 µM)。