Novel adamantane-bearing anilines and properties of their supramolecular complexes with β-cyclodextrin
摘要:
Several novel anilines bearing 1-adamantyl substituents that are useful for drug modification were synthesised from the corresponding 1-adamantyl (nitrophenyl) ketones. The host-guest systems of these prepared ligands with beta-cyclodextrin (beta-CD) were studied using electrospray ionisation mass spectrometry, NMR spectroscopy, titration calorimetry and semi-empirical calculations. The complexes with 1: 1 stoichiometry were found to predominantly exist as pseudorotaxane-like threaded structures with the adamantane cage sitting deep in the cavity of beta-CD close to the wider rim. Such geometry was observed for all examined amines and is independent of their structure and/or presence of protic substituents.
related pollutants from wastewater have been developed. We have incorporated a lipophilic adamantane cage into two polar disulphonatonaphthalene-1-azobenzene dyes to prove the concept that modified dyes can be treated via host–guest supramolecular interactions using suitable cyclodextrin (CD) and cucurbit[n]uril (CBn) hosts. We conducted 1H NMR experiments to demonstrate that both dyes form specific
尽管存在环境和健康风险,但偶氮染料仍然是非常流行的着色剂。因此,已经开发了从废水中去除染料和/或相关污染物的方法。我们已经将亲脂性的金刚烷笼结合到两种极性的二磺基萘-1-基苯偶氮染料中,以证明可以通过使用合适的环糊精(CD)和葫芦[ n ] uril(CB n)宿主通过客体-超分子相互作用来处理改性染料的概念。我们进行了1 H NMR实验,以证明这两种染料均与埋在CB7或β-CD腔内的金刚烷笼形成特定的包合物。使用等温滴定热法,我们确定了与β-CD和CB7的缔合常数在(0.7–1.3)×10 6的范围内和(1.4–3.4)×10 8。由于染料@ CB7配合物微溶于水,即使存在β-CD,也可以通过沉淀将染料有效地从水中去除。
Adamantane-Substituted Purines and Their β-Cyclodextrin Complexes: Synthesis and Biological Activity
adamantane skeleton does not compromise the biological activity, and some of the new purines displayed even higher inhibition activity towards CDK2/cyclin E than the parental compounds. These findings were supported by a docking study, which showed an adamantane scaffold inside the binding pocket participating in the complex stabilisation with non-polar interactions. In addition, we demonstrated that β-cyclodextrin
Several novel anilines bearing 1-adamantyl substituents that are useful for drug modification were synthesised from the corresponding 1-adamantyl (nitrophenyl) ketones. The host-guest systems of these prepared ligands with beta-cyclodextrin (beta-CD) were studied using electrospray ionisation mass spectrometry, NMR spectroscopy, titration calorimetry and semi-empirical calculations. The complexes with 1: 1 stoichiometry were found to predominantly exist as pseudorotaxane-like threaded structures with the adamantane cage sitting deep in the cavity of beta-CD close to the wider rim. Such geometry was observed for all examined amines and is independent of their structure and/or presence of protic substituents.
Adamantane-Substituted Purine Nucleosides: Synthesis, Host–Guest Complexes with β-Cyclodextrin and Biological Activity
synthesized purine nucleosides to form stable host-guest complexes with β-cyclodextrin (β-CD) was confirmed using nuclear magnetic resonance (NMR) and mass spectrometry (ESI-MS) experiments. The in vitro antiproliferative activity of purine nucleosides and their equimolar mixtures with β-CD was tested against two types of human tumor cell line. Six adamantane-based purine nucleosides showed an antiproliferative