Synthesis and Evaluation of 6-Nitro-7-(1-piperazino)quinazolines: Dual-Acting Compounds with Inhibitory Activities toward Both Tumor Necrosis Factor-.ALPHA. (TNF-.ALPHA.) Production and T Cell Proliferation
作者:Masanori Tobe、Yoshiaki Isobe、Hideyuki Tomizawa、Takahiro Nagasaki、Masamitsu Aoki、Toru Negishi、Hideya Hayashi
DOI:10.1248/cpb.51.1109
日期:——
We investigated the chemical modifications of the nitroquinazoline derivative (1) through the replacement of the NH group at the C(4)-position with several N-alkyl groups to increase the lipophilicity at the C(4)-position. Among them, we found that the N-methyl analogue (5a) showed a 2-fold loss in the inhibitory activity toward tumor necrosis factor-α (TNF-α) production in vitro as compared with the NH analogue (1); however, 5a exhibited an oral inhibitory activity on TNF-α production with an ED50 value of 26 mg/kg, whereas 1 did not. Moreover, the oral bioavailability of 5a was higher than that of 1 (1, F=1%; 5a, F=21%), and the calculated ClogP value for 5a was higher than that for 1. These results suggest that the improved lipophilicity of 5a compared with that of 1 reflects its greater inhibitory activity on TNF-α production in vivo as well as oral bioavailability.
我们研究了硝基喹唑啉衍生物(1)的化学修饰,通过用几个 N-烷基取代 C(4)-位上的 NH 基团来增加 C(4)-位上的亲油性。其中,我们发现与 NH 类似物(1)相比,N-甲基类似物(5a)对肿瘤坏死因子-α(TNF-α)生成的体外抑制活性降低了 2 倍;但是,5a 对 TNF-α 生成具有口服抑制活性,ED50 值为 26 mg/kg,而 1 则没有。此外,5a 的口服生物利用度高于 1(1,F=1%;5a,F=21%),5a 的计算 ClogP 值也高于 1。这些结果表明,与 1 相比,5a 的亲脂性更强,这反映了它对 TNF-α 在体内产生的抑制活性以及口服生物利用度更高。