Synthesis, crystal structure, hydrogen bond patterns and Hirshfeld surface analysis of (S)-5-(4-hydroxybenzyl)-imidazolidine-2,4‑dione
作者:Gerzon E. Delgado、Asiloé J. Mora、Pilar Narea、Cecilia Chacón、Gustavo Marroquin、Benjamín Hernández、Jonathan Cisterna、Iván Brito
DOI:10.1016/j.molstruc.2021.131757
日期:2022.2
824(8) Å. The molecular structure and crystalpacking are stabilized by intermolecular N–H•••O and O–H•••O hydrogen formed infinite two-dimensional chains, with graph-set C(6), C(5) and C(11) that run along the a, b and c directions forming a two-dimensional network. Hirshfeld surface analysis confirm that the most important contributions for the crystalpacking are from N–H••O and O–H••O interactions
已合成标题化合物 ( S )-5-(4-羟基苄基)-咪唑烷-2,4-二酮,一种新的α-氨基酸乙内酰脲衍生物,分子式为 C 10 H 10 N 2 O 3并通过 MS 对其进行结构表征、FT-IR、NMR 和 X 射线衍射技术。光谱结果与骨架结构一致。粉末 X 射线衍射数据证实了结晶样品的相纯度。单晶X射线衍射分析表明在正交空间群P 2 1 2 1 2 1 (N°19)中结晶,Z= 4,晶胞参数a = 6.217(3) Å, b= 7.653(3) Å, c = 19.824(8) Å。通过分子间 N–H•••O 和 O–H•••O 氢形成无限二维链,具有图集 C(6)、C(5) 和 C(11) 来稳定分子结构和晶体堆积) 沿a、b和c方向运行,形成二维网络。Hirshfeld 表面分析证实,晶体堆积的最重要贡献来自 N–H••O 和 O–H••O 相互作用。能量框架计算表明,分子之间形成的
Thiohydantoins and hydantoins derived from amino acids as potent urease inhibitors: Inhibitory activity and ligand-target interactions
作者:Priscila Goes Camargo、Marciéli Fabris、Matheus Yoshimitsu Tatsuta Nakamae、Breno Germano de Freitas Oliveira、Camilo Henrique da Silva Lima、Ângelo de Fátima、Marcelle de Lima Ferreira Bispo、Fernando Macedo
DOI:10.1016/j.cbi.2022.110045
日期:2022.9
report the investigation of hydantoins and thiohydantoins derived from L and d-amino acids as inhibitors against the Canavalia ensiformis urease (CEU). The biochemical in vitro assay against CEU revealed a promising inhibitory potential for most thiohydantoins with six of them showing %I higher than the reference inhibitor thiourea (56.5%). In addition, thiohydantoin derived from l-valine, 1b, as well as
我们报告了从L和d氨基酸中提取的乙内酰脲和硫代乙内酰脲作为抗Canavalia ensiformis脲酶 (CEU) 抑制剂的研究。针对 CEU的体外生化试验显示,大多数硫代乙内酰脲具有良好的抑制潜力,其中 6 种显示 %I 高于参考抑制剂硫脲 (56.5%)。此外,衍生自l-缬氨酸的硫代乙内酰脲1b以及衍生自l的乙内酰脲2d-甲硫氨酸被确定为最有效的抑制剂,%I 分别为 90.5 和 85.9。酶动力学研究证明了这些化合物的混合和非竞争性抑制曲线,1b的 K i值为 0.42 mM , 2d的 K i 值为0.99 mM 。这些从传统比色法获得的动力学参数与 K D严格相关通过脲酶复合物的饱和转移差 (STD) 技术光谱测量的值。STD 也用于证明负责与酶结合的配体部分。分子对接研究表明,硫代乙内酰脲和乙内酰脲环可以作为药效团,因为它们通过氢键相互作用与酶活性和/或变构位点中的关键氨基酸
Yamashiro, Akihiro; Yokozeki, Kenzo; Kano, Hideo, Agricultural and Biological Chemistry, 1988, vol. 52, # 11, p. 2851 - 2856
作者:Yamashiro, Akihiro、Yokozeki, Kenzo、Kano, Hideo、Kubota, Koji
DOI:——
日期:——
Discovery of Novel 2,5-Dioxoimidazolidine-Based P2X<sub>7</sub> Receptor Antagonists as Constrained Analogues of KN62
作者:Jin-Hee Park、Ga-Eun Lee、So-Deok Lee、Tran Thi Hien、Sujin Kim、Jin Won Yang、Joong-Heui Cho、Hyojin Ko、Sung-Chul Lim、Yoon-Gyoon Kim、Keon-Wook Kang、Yong-Chul Kim
DOI:10.1021/jm500324g
日期:2015.3.12
Novel 2,5-dioxoimidazolidine-based conformationally constrained analogues of KN62 (1) were developed as P2X7 receptor (P2X7R) antagonists using a rigidification strategy of the tyrosine backbone of 1. SAR analysis of the 2,5-dioxoimidazolidine scaffold indicated that piperidine substitution at the N3 position and no substitution at N1 position were preferable. Further optimization of the substituents at the piperidine nitrogen and the spacer around the skeleton resulted in several superior antagonists to 1, including 1-adamantanecarbonyl analogue 21i (IC50 = 23 nM in ethidium uptake assay; IC50 = 14 nM in IL-1 beta ELISA assay) and (3-CF3-4-Cl)benzoyl analogue (-)-21w (54 nM in ethidium uptake assay; 9 nM in IL-1 beta ELISA assay), which was more potent than the corresponding (+) isomer. Compound 21w displayed potent inhibitory activity in an ex vivo model of LTP-induced pain signaling in the spinal cord and significant anti-inflammatory activity in in vivo models of carrageenan-induced paw edema and type II collagen-induced joint arthritis.
Yamashiro, Akihiro; Kubota, Koji; Yokozeki, Kenzo, Agricultural and Biological Chemistry, 1988, vol. 52, # 11, p. 2857 - 2864