RE12 derivatives displaying Vaccinia H1-related phosphatase (VHR) inhibition in the presence of detergent and their anti-proliferative activity against HeLa cells
作者:Frédéric Thuaud、Shuntaro Kojima、Go Hirai、Kana Oonuma、Ayako Tsuchiya、Takako Uchida、Teruhisa Tsuchimoto、Mikiko Sodeoka
DOI:10.1016/j.bmc.2014.03.012
日期:2014.5
New derivatives of Vaccinia H1-related phosphatase (VHR) inhibitor RE12 (5) were designed by replacing the long straight alkyl chain with other hydrophobic functionalities containing two aromatic rings, with the aim of obtaining potent, cell-active inhibitors. We established a direct coupling reaction between tetronic acid derivative and thioimidate to prepare the RE derivatives 6a–6i efficiently.
牛痘H1相关磷酸酶(VHR)抑制剂RE12(5)的新衍生物是通过用含有两个芳香环的其他疏水性官能团取代长直烷基链而设计的,目的是获得有效的细胞活性抑制剂。我们在tetronic酸衍生物和硫代亚氨酸酯之间建立了直接偶联反应,以有效地制备RE衍生物6a - 6i。这些化合物在0.001%NP-40的存在下均表现出VHR抑制活性,而RE12(5)在此条件下即使在100μM时也没有活性。进一步的结构活性研究侧重于末端取代,得到三氟甲基衍生物6k(RE176)和硝基衍生物6升(RE177)。在NP-40存在下,IC 50值为6l几乎与在不存在RE12(5)时的IC 50值相等。化合物6k(RE176)有效抑制HeLa细胞的增殖。