Synthesis of Bis(2,2,3,3-tetrafluoro-1,4-butanedialkoxy)-2-trans-6-bis(4-fluorobenzyl)spirocyclotetraphosphazene: Structural Characterization, Biological Activity and DFT Studies
作者:Gamze Elmas、Zeynel Kılıç、Bünyemin Çoşut、Gürkan Keşan、Leyla Açık、Merve Çam、Beste Çağdaş Tunalı、Mustafa Türk、Tuncer Hökelek
DOI:10.1007/s10870-020-00851-4
日期:2021.6
The Cl replacement reaction of octachlorocyclotetraphosphazene, N4P4Cl8 (1), with two equimolar amounts of N-(4-fluorobenzyl)-N′-methylpropane-1,3-diamine led to the formation of 4,4,8,8-tetrachloro-2-trans-6-bis-N-(4-fluorobenzyl)-N′-methylpropane-1,3-diamino-cyclotetraphosphazene (2). The reaction of 2 with excess sodium 2,2,3,3-tetrafluoro-1,4-butanedioxide afforded the bis(2,2,3,3-tetrafluoro-1,4-butanedialkoxy)-2-trans-6-bis(4-fluorobenzyl)spirocyclotetraphosphazene (2a). The elemental analyses, mass spectrum (ESI–MS), FTIR, HSQC, HMBC, 1H, 13C and 31P NMR spectral data of 2a were consistent with the proposed structure. The crystal structure of 2a was elucidated by X-ray diffraction method. The spectroscopic data of the molecules (2 and 2a) in the ground state were investigated by the Density Functional Theory (DFT) from the crystal structures. On the other hand, compound 2a was found to be the most active against S. aureus G(+) (MIC value: 125 µM). Whilst, any antifungal activity of 2a was not observed against C. albicans and C. tropicalis. This compound also exhibits cytotoxic activity against L929 fibroblast and MCF-7 breast cancer cells. The interaction of 2a with pBR322 DNA was researched using gel electrophoresis. It is understood that the change in DNA conformation by interstrand of 2a with A/A and G/G nucleobases in DNA. The synthesis, spectroscopic and crystallographic characterizations, biological activities and DFT studies of bis(2,2,3,3-tetrafluoro-1,4-butanedialkoxy)-2-trans-6-bis(4-fluorobenzyl)spirocyclotetraphosphazene were presented.
八
氯环
磷氮烷 N4P4Cl8 (1) 与两个等摩尔量的 N-(4-
氟苄基)-N′-甲基
丙烷-1,3-二胺发生 Cl 置换反应,生成 4,4,8,8-四
氯-2-反式-6-双-N-(4-
氟苄基)-N′-甲基
丙烷-1,3-二胺环
磷氮烷 (2)。将 2 与过量的 2,2,3,3-四
氟-1,4-丁二氧化
钠反应,得到了双(2,2,3,3-四
氟-1,4-丁二酰氧基)-2-反式-6-双(4-
氟苄基)螺环四
磷杂环(2a)。2a 的元素分析、质谱(ESI-MS)、傅立叶变换红外光谱(FTIR)、HSQC、HMBC、1H、13C 和 31P NMR 光谱数据均与所提出的结构相符。X 射线衍射法阐明了 2a 的晶体结构。根据晶体结构,利用密度泛函理论(DFT)研究了分子(2 和 2a)在基态时的光谱数据。另一方面,发现化合物 2a 对
金黄色葡萄球菌 G(+)的活性最强(MIC 值:125 µM)。同时,没有观察到 2a 对白僵菌和热带僵菌有任何抗真菌活性。该化合物还对 L929 成纤维细胞和 MCF-7 乳腺癌细胞具有细胞毒性。凝胶电泳法研究了 2a 与 pB
R322 DNA 的相互作用。据了解,2a 与 DNA 中的 A/A 和 G/G 核碱基的链间作用改变了 DNA 的构象。介绍了双(2,2,3,3-四
氟-1,4-丁二酰氧基)-2-反式-6-双(4-
氟苄基)螺环四
磷嗪的合成、光谱和晶体学表征、
生物活性和 DFT 研究。