Synthesis and Crystallographic Insight into the Structural Aspects of Some Novel Adamantane-Based Ester Derivatives
作者:C. Kumar、Huey Kwong、Siau Mah、Tze Chia、Wan-Sin Loh、Ching Quah、Gin Lim、Siddegowda Chandraju、Hoong-Kun Fun
DOI:10.3390/molecules201018827
日期:——
Adamantyl-based compounds are commercially important in the treatments for neurological conditions and type-2 diabetes, aside from their anti-viral abilities. Their values in drug design are chronicled as multi-dimensional. In the present study, a series of 2-(adamantan-1-yl)-2-oxoethyl benzoates, 2(a–q), and 2-(adamantan-1-yl)-2-oxoethyl 2-pyridinecarboxylate, 2r, were synthesized by reacting 1-adamantyl bromomethyl ketone with various carboxylic acids using potassium carbonate in dimethylformamide medium at room temperature. Three-dimensional structures studied using X-ray diffraction suggest that the adamantyl moiety can serve as an efficient building block to synthesize 2-oxopropyl benzoate derivatives with synclinal conformation with a looser-packed crystal packing system. Compounds 2a, 2b, 2f, 2g, 2i, 2j, 2m, 2n, 2o, 2q and 2r exhibit strong antioxidant activities in the hydrogen peroxide radical scavenging test. Furthermore, three compounds, 2p, 2q and 2r, show good anti-inflammatory activities in the evaluation of albumin denaturation.
金刚烷基化合物除了具有抗病毒能力外,在治疗神经性疾病和2型糖尿病方面也具有重要的商业价值。它们在药物设计中的价值被记录为多维度的。本研究中,通过1-金刚烷基溴甲基酮与各种羧酸在室温下以碳酸钾为催化剂在二甲基甲酰胺介质中反应,合成了一系列2-(金刚烷-1-基)-2-氧代乙基苯甲酸酯,2(a–q),以及2-(金刚烷-1-基)-2-氧代乙基-2-吡啶甲酸酯,2r。通过X射线衍射研究的三维结构表明,金刚烷部分可以作为一个有效的构建单元,用于合成具有顺式构象的2-氧代丙基苯甲酸酯衍生物,其晶体堆积系统较为松散。化合物2a、2b、2f、2g、2i、2j、2m、2n、2o、2q和2r在过氧化氢自由基清除试验中表现出较强的抗氧化活性。此外,三种化合物2p、2q和2r在白蛋白变性评估中显示出良好的抗炎活性。