Synthesis and biological evaluation of new 2-alkylaminoethyl-1,1-bisphosphonic acids against Trypanosoma cruzi and Toxoplasma gondii targeting farnesyl diphosphate synthase
作者:Valeria S. Rosso、Sergio H. Szajnman、Leena Malayil、Melina Galizzi、Silvia N.J. Moreno、Roberto Docampo、Juan B. Rodriguez
DOI:10.1016/j.bmc.2011.02.037
日期:2011.4
cruzi farnesyl diphosphate synthase (TcFPPS), which constitutes a valid target for Chagas’ disease chemotherapy. Compound 26 was an effective agent against T. cruzi (amastigotes) exhibiting an IC50 value of 0.67 μM, while this compound showed an IC50 value of 0.81 μM against the target enzyme TcFPPS. This drug was less effective against the enzymatic activity of T. cruzi solanesyl diphosphate synthase
研究了长链 2-烷基氨基乙基-1,1-二膦酸盐对临床上更相关的克氏锥虫(美国锥虫病(南美锥虫病)的病原体)增殖和弓形虫速殖子的作用。特别是,化合物26被证明是一种针对细胞内形式的克氏锥虫的极其有效的抑制剂,其IC 50值在纳摩尔范围内。这种细胞活性与对克氏锥虫法呢基二磷酸合酶 ( Tc FPPS)的酶活性的强烈抑制有关,后者构成了恰加斯病化疗的有效靶点。化合物26是一种有效的抗克氏锥虫(无鞭毛体)药物,其 IC 50值为 0.67 μM,而该化合物对靶酶Tc FPPS的 IC 50值为 0.81 μM 。该药物对T. cruzi茄尼基二磷酸合酶Tc SPPS的酶活性效果较差,IC 50值为 3.2 μM。有趣的是,化合物26对弓形虫(速殖子)也非常有效,IC 50值为 6.23 μM。这种细胞活性也与对靶酶Tg的酶活性的抑制有关。FPPS (IC 50 = 0.093 μM) 由于含双膦酸盐的化合物是