相关实验视频

Updated: Jul 2, 2025

Estimating the Yield of Compounds on the TLC Plate via the Blue-LED Illumination Technique

Estimating the Yield of Compounds on the TLC Plate via the Blue-LED Illumination Technique

Published on: October 6, 2022

青酸A-G:是从Aspergillus aculeatus中提取的洛瓦斯塔丁衍生物

Fei Liu¹, Xinyi Qiao¹, Qin Li¹

¹Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, People's Republic of China.

Journal of natural products

|February 19, 2024

概括

研究人员从Aspergillus aculeatus中分离出了新型的洛瓦斯塔丁衍生物,包括具有潜在降脂作用的独特化合物. 化合物5通过调节相关基因转录来显著抑制脂质积累.

科学领域:

自然产品化学自然产品化学
药用化学医学化学
分子生物学分子生物学

背景情况:

Aspergillus aculeatus是已知的生物活性二次代谢产物的来源.
洛瓦斯塔丁衍生物因其降低胆固醇的特性而闻名.
从微生物来源探索新型化合物对于药物发现至关重要.

研究的目的:

隔离和描述来自Aspergillus aculeatus的新型洛瓦斯塔丁衍生物.
阐明这些新型化合物的结构和绝对配置.
为了评估分离的化合物的降脂潜力.

主要方法:

使用色谱技术分离和净化化合物.
通过高分辨率电喷射电离质谱法 (HRESIMS) 和核磁共振 (NMR) 谱法阐明结构.
通过X射线衍射分析和量子化学计算来确定绝对配置.

主要成果:

隔离了七种新型的洛瓦斯塔丁衍生物,A-G (1-7),以及三种已知的化合物 (8-10).
化合物6呈现出一种独特的芳香化异质四环环形6/6/6/6环系统,这是一个新的结构图案.
甲基酸A-C (1-3) 在它们的侧链中含有γ-乳酸.
化合物5通过调节参与脂质吸收和合成的基因显著抑制细胞内脂质积累.

结论:

这项研究成功地确定并描述了来自Aspergillus aculeatus的新型洛瓦斯塔丁衍生物.
这些发现突显了洛瓦斯塔丁衍生物的结构多样性,包括一个新的环系.
化合物5显示为治疗脂质代谢障碍的治疗药物具有前途.

更多相关视频

Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.

Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.

Published on: February 15, 2019

Histological Quantification to Determine Lung Fungal Burden in Experimental Aspergillosis

Histological Quantification to Determine Lung Fungal Burden in Experimental Aspergillosis

Published on: March 9, 2018

相关概念视频

Lipid-Lowering Drugs: Statins and Miscellaneous Agents

Lipid-Lowering Drugs: Statins and Miscellaneous Agents

Hyperlipidemia, a medical condition often referred to as high cholesterol, is characterized by abnormally elevated levels of lipids in the bloodstream. When present in excess, these lipids, specifically cholesterol and triglycerides, can lead to serious health complications, often involving cardiovascular diseases. Illnesses like atherosclerosis, heart attacks, and pancreatitis have all been linked to untreated hyperlipidemia. This means controlling and regulating cholesterol and triglyceride...

Antiasthma Drugs: Leukotriene Modifiers

Antiasthma Drugs: Leukotriene Modifiers

Leukotriene modifiers, or cysteinyl leukotriene receptor antagonists, are medications used to manage chronic asthma. These agents target specific inflammatory mediators produced during arachidonic acid metabolism, an essential process in generating inflammation in the body.
Leukotriene modifiers work through two distinct mechanisms:

Direct-Acting Cholinergic Agonists: Pharmacokinetics

Direct-Acting Cholinergic Agonists: Pharmacokinetics

Direct-acting cholinergic agonists, such as synthetic choline esters and naturally occurring alkaloids, exert their effects by enhancing the actions of acetylcholine and stimulating the parasympathetic nervous system. Synthetic choline esters share structural similarities with acetylcholine. For example, they have a positively charged quaternary ammonium or onium group, contributing to their hydrophilic characteristics. As a result, they are poorly absorbed in the body through oral...