Synthesis and Antitumor Evaluation of Symmetrical 1,5-Diamidoanthraquinone Derivatives as Compared to Their Disubstituted Homologues
作者:Hsu-Shan Huang、Hui-Fen Chiu、Chi-Wei Tao、In-Been Chen
DOI:10.1248/cpb.54.458
日期:——
A series of symmetrical 1,5-diamidoanthraquinone derivatives with potentially bioreducible groups has been synthesized and their cytostatic activity against the panel of various cancer cell lines in vitro has been studied. Preliminary structure–activity relationships were established. The results indicated that compounds 5 and 18 exhibited significant potent cytotoxicity at 1.24—1.75 μM for Hepa G2 cell line; compounds 5, 16, and 18 exhibited cytotoxicity at 0.14—1.82 μM for 2.2.15 cell line as determined by XTT colorimetric assay. Two structurally related compounds, mitoxantrone and adriamycin, were tested in parallel as positive controls. In addition, it was found that compounds 5 and 18 were a more potent and specific human hepatoma cell line than mitoxantrone and showed comparable activity to adriamycin. Among them, compound 18 was the most potent for 2.2.15 cells. We have demonstrated that the anthraquinone moiety is essential for activity and that less sterically hindered substituents contribute to enhanced in vitro efficacy. Implications for amidoanthraquinone cytotoxicity as potential anticancer agents are discussed. We further delineate the nature of the pharmacophore for this class of compounds, which provides a rational basis for the structure–activity relationships.
一系列对称的1,5-二氨基蒽醌衍生物已被合成,并研究了其对多种癌细胞系的细胞抑制活性。初步的结构-活性关系得到了建立。结果显示,化合物5和18在1.24-1.75 μM时对Hepa G2细胞系表现出显著的细胞毒性;化合物5、16和18在0.14-1.82 μM时对2.2.15细胞系表现出细胞毒性,通过XTT比色法进行了测定。两种结构相关的化合物,米托蒽醌和阿霉素,被作为阳性对照进行平行测试。此外,发现化合物5和18在对人肝癌细胞系的活性上比米托蒽醌更强,而与阿霉素的活性相当。在上述化合物中,化合物18对2.2.15细胞的活性最强。我们证明了蒽醌基团对于活性是必不可少的,且较少空间位阻的取代基有助于增强体外活性。讨论了氨基蒽醌类化合物作为潜在抗癌剂的细胞毒性影响。我们进一步阐明了这一类化合物的药效基团的性质,为结构-活性关系提供了合理依据。