手性黄烷酮衍生物与蛋白氨基酸偶联物库的合成及抗炎活性评价。

Synthesis and Anti-Inflammatory Evaluation of a Library of Chiral Derivatives of Xanthones Conjugated with Proteinogenic Amino Acids.

机构信息

3B's Research Group, I3BS-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal.

ICVS/3B's-PT Government Associate Laboratory, 4806-909 Braga/Guimarães, Portugal.

出版信息

Int J Mol Sci. 2023 Jun 19;24(12):10357. doi: 10.3390/ijms241210357.

Abstract

In recent decades, the relationship between drug chirality and biological activity has been assuming enormous importance in medicinal chemistry. Particularly, chiral derivatives of xanthones (CDXs) have interesting biological activities, including enantioselective anti-inflammatory activity. Herein, the synthesis of a library of CDXs is described, by coupling a carboxyxanthone () with both enantiomers of proteinogenic amino esters as chiral building blocks (-), following the chiral pool strategy. The coupling reactions were performed at room temperature with good yields (from 44 to 99.9%) and very high enantiomeric purity, with most of them presenting an enantiomeric ratio close to 100%. To afford the respective amino acid derivatives (-), the ester group of the CDXs was hydrolyzed in mild alkaline conditions. Consequently, in this work, sixty new derivatives of CDXs were synthetized. The cytocompatibility and anti-inflammatory activity in the presence of M1 macrophages were studied for forty-four of the new synthesized CDXs. A significant decrease in the levels of a proinflammatory cytokine targeted in the treatment of several inflammatory diseases, namely interleukin 6 (IL-6), was achieved in the presence of many CDXs. The amino ester of L-tyrosine (X1AELT) was the most effective in reducing IL-6 production (52.2 ± 13.2%) by LPS-stimulated macrophages. Moreover, it was ≈1.2 times better than the D-enantiomer. Indeed, enantioselectivity was observed for the majority of the tested compounds. Thus, their evaluation as promising anti-inflammatory drugs should be considered.

摘要

在最近几十年,药物手性与生物活性之间的关系在药物化学中变得越来越重要。特别是,黄烷酮的手性衍生物(CDXs)具有有趣的生物活性,包括对映选择性抗炎活性。在此,通过将羧基黄烷酮()与手性砌块(-)的两种对映体(即蛋白质氨基酸酯)偶联,描述了一个 CDX 文库的合成,采用手性库策略。偶联反应在室温下进行,收率高(44-99.9%),对映体纯度非常高,大多数反应的对映体比例接近 100%。为了得到相应的氨基酸衍生物(-),在温和的碱性条件下水解 CDXs 的酯基。因此,在这项工作中,合成了六十种新的 CDX 衍生物。研究了其中的 44 种新合成的 CDXs 在 M1 巨噬细胞存在时的细胞相容性和抗炎活性。在许多 CDXs 的存在下,针对几种炎症性疾病(即白细胞介素 6(IL-6))治疗的促炎细胞因子的水平显著降低。L-酪氨酸的氨基酸乙酯(X1AELT)在 LPS 刺激的巨噬细胞中降低 IL-6 产生的效果最显著(52.2±13.2%)。此外,它比 D-对映体好约 1.2 倍。事实上,对于大多数测试的化合物都观察到了对映选择性。因此,应考虑将它们作为有前途的抗炎药物进行评估。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59a5/10299275/ee18adac25c6/ijms-24-10357-g001.jpg

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