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5-Aryl-1,3,4-thiadiazole-based Hydroxamic Acids as Histone Deacetylase Inhibitors and Antitumor Agents: Synthesis, Bioevaluation and Docking Study

机译:基于5-Aryl-1,3,4-噻二唑的异羟肟酸作为组蛋白脱乙酰基酶抑制剂和抗肿瘤剂:合成,生物评价和对接研究。

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摘要

The search for newer histone deacetylase (HDAC) inhibitors has attracted a great deal of interest of medicinal chemists worldwide, especially after the first HDAC inhibitor (Zolinza (R), widely known as SAHA or Suberoylanilide hydroxamic acid) was approved by the FDA for the treatment of T-cell lymphoma in 2006. As a continuity of our ongoing research in this area, we designed and synthesized a series of 5-aryl-1,3,4-thiadiazole-based hydroxamic acids as analogues of SAHA and evaluated their biological activities. Most of the compounds in this series, e.g. compounds with 5-aryl moiety being 2-furfuryl (5a), 5-bromofuran-2-yl (5b), 5-methylfuran-2-yl (5c), thiophen-2-yl (5d), 5-methylthiophen-2-yl (5f) and pyridyl (5g-i), were found to have potent anticancer cytotoxicity with IC50 values of generally 5-to 10-fold lower than that of SAHA in 4 human cancer cell lines assayed. Those compounds with potent cytotoxicity were also found to have strong HDAC inhibition effects. Docking studies revealed that compounds 5a and 5d displayed high affinities towards HDAC2 and 8.
机译:寻找新型组蛋白脱乙酰基酶(HDAC)抑制剂引起了全世界医学化学家的浓厚兴趣,尤其是在FDA批准将第一种HDAC抑制剂(Zolinza(R),俗称SAHA或Suberoylanilide异羟肟酸)用于FDA之后。在2006年治疗T细胞淋巴瘤。作为我们在该领域正在进行的研究的连续性,我们设计和合成了一系列基于5-芳基-1,3,4-噻二唑的异羟肟酸作为SAHA的类似物,并评估了它们的生物学特性。活动。该系列中的大多数化合物,例如具有5-芳基部分的化合物是2-糠基(5a),5-溴呋喃-2-基(5b),5-甲基呋喃-2-基(5c),噻吩-2-基(5d),5-甲基噻吩-2在所测定的4种人类癌细胞系中,发现N-基(5f)和吡啶基(5g-i)具有有效的抗癌细胞毒性,其IC50值通常比SAHA低50至10倍。还发现那些具有强细胞毒性的化合物具有强大的HDAC抑制作用。对接研究表明,化合物5a和5d对HDAC2和8具有很高的亲和力。

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