Synthesis of magnolol and honokiol derivatives and their effect against hepatocarcinoma cells
作者:Margherita Maioli、Valentina Basoli、Paola Carta、Davide Fabbri、Maria Antonietta Dettori、Sara Cruciani、Pier Andrea Serra、Giovanna Delogu
DOI:10.1371/journal.pone.0192178
日期:——
The hepatocellular carcinoma is one of the most common malignant tumour with high level of mortality rate due to its rapid progression and high resistance to conventional chemotherapies. Thus, the search for novel therapeutic leads is of global interest. Herein, a small set of derivatives of magnolol 1 and honokiol 2, the main components of Magnolia grandiflora and Magnolia obovata, were evaluated in in vitro assay using tumoral hepatocytes. The pro-drug approach was applied as versatile strategy to the improve bioactivity of the compounds by careful transformation of the hydroxyl groups of magnolol 1 and honokiol 2 in suitable ester derivatives. Compounds 10 and 11 resulted to be more potent than the parental honokiol 2 at concentration down to 1 μM with complete viability of treated fibroblast cells up to concentrations of 80 μM. The combination of a butyrate ester and a bare phenol-OH group in the honokiol structure seemed to play a significant role in the antiproliferative activity identifying an interesting pharmacological clue against hepatocellular carcinoma.
肝细胞癌是最常见的恶性肿瘤之一,由于其进展迅速和对传统化疗的耐药性强,死亡率很高。因此,寻找新的治疗线索受到全球关注。在此,研究人员利用肿瘤肝细胞,在体外试验中评估了木兰醇 1 和厚朴酚 2(厚朴和白玉兰的主要成分)的一小部分衍生物。通过将厚朴酚 1 和厚朴酚 2 的羟基仔细转化为合适的酯类衍生物,将原药方法作为提高化合物生物活性的多功能策略加以应用。结果发现,化合物 10 和 11 在浓度低至 1 μM 时比亲代的 honokiol 2 更有效,在浓度高达 80 μM 时,经处理的成纤维细胞可完全存活。在 honokiol 的结构中,丁酸酯和裸露的苯酚-OH 基团的组合似乎在抗增殖活性中发挥了重要作用,为抗击肝细胞癌提供了一条有趣的药理学线索。