Two series of erlotinib-alkylphospholipid hybrids were prepared and evaluated for their antiproliferative activities against a panel of four cell lines representing lung, breast, liver and skin cancers using erlotinib and miltefosine as reference standards. Amide analogs elicited more enhanced cytotoxic activity than analogous esters. Amide derivatives 8d and 8e exhibited promising broad-spectrum antiproliferative activity and higher efficacy than reference erlotinib and miltefosine. Their cellular GI50 values was in the ranges of 24.7-46.9 μM and 26.8-43.1 μM for 8e and 8d respectively. Assay results of the inhibitory activity of the prepared compounds on EGFR kinase reaction and Akt phosphorylation in conjugation with statistical correlation analysis indicated that other mechanisms might contribute to their elicited cytotoxicities. In addition, statistical correlation analysis revealed that mechanisms of elicited cytotoxicities for amide series might be different from ester series. In addition, correlation analysis indicated variations in the mechanisms according to the types of cell line.

中文翻译：

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嵌合厄洛替尼-烷基磷脂杂种的设计，合成和细胞毒性。

制备了两个系列的厄洛替尼-烷基磷脂杂种，并使用厄洛替尼和米替福辛作为参考标准，评估了它们对代表肺癌，乳腺癌，肝癌和皮肤癌的四种细胞系的抗增殖活性。酰胺类似物比类似酯引起的细胞毒性活性更高。酰胺衍生物8d和8e表现出有希望的广谱抗增殖活性，并且比参考厄洛替尼和米替福辛具有更高的疗效。对于8e和8d，它们的细胞GI50值分别在24.7-46.9μM和26.8-43.1μM的范围内。与统计相关分析相结合，制得的化合物对EGFR激酶反应和Akt磷酸化的抑制活性的测定结果表明，其他机制可能有助于其引起的细胞毒性。此外，统计相关分析表明，酰胺系列引发细胞毒性的机制可能与酯系列不同。另外，相关分析表明，根据细胞系类型的不同，机制也有所不同。