Ferrocenyl compounds possessing protected phenol and thiophenol groups: Synthesis, X-ray structure, and in vitro biological effects against breast cancer
作者:Julia B. Heilmann、Elizabeth A. Hillard、Marie-Aude Plamont、Pascal Pigeon、Michael Bolte、Gérard Jaouen、Anne Vessières
DOI:10.1016/j.jorganchem.2007.12.011
日期:2008.4
We have previously shown that conjugated ferrocenyl p-phenols show strong cytotoxic effects against both the hormone-dependent MCF-7 and hormone-independent MDA-MB-231 breast cancer cell lines, possibly via metabolic quinone methide (QM) formation. To further evaluate this proposed mechanism, we have created a series of ferrocenyl prodrugs containing methyl and acetyl-protected thio- and oxo-phenols:
先前我们已经表明,共轭二茂铁基对苯酚可能通过代谢醌甲基化物(QM)形成,对激素依赖性MCF-7和激素依赖性MDA-MB-231乳腺癌细胞系均表现出强大的细胞毒性作用。为了进一步评估该提议的机制,我们创建了一系列含有甲基和乙酰基保护的硫代和羰基苯酚的二茂铁基前药:2-二茂铁基-1,1-双(4-乙酰氧基苯基)-丁-1-烯(5),2-二茂铁基-1,1-双(4-硫代乙酰苯基)-丁-1-烯(6),2-二茂铁基-1,1-双(4-甲氧基苯基)-丁-1-烯(7),和2-二茂铁基-1,1-双(4-硫代甲基苯基)-丁-1-烯(8),它们可能被水解酶原位活化。只有乙酰氧基5显示抗增殖作用(IC 50对MDA-MB-231 0.5μM的),而6 - 8用作纯雌激素(增殖对MCF-7和小到对MDA-MB-231没有作用)。5的行为与先前发现的对游离酚2-二茂铁基-1,1-二(4-羟苯基)-丁-1-烯(2)的行为相似