相关实验视频

Updated: Jul 8, 2025

Chemical Inactivation of the E3 Ubiquitin Ligase Cereblon by Pomalidomide-based Homo-PROTACs

Chemical Inactivation of the E3 Ubiquitin Ligase Cereblon by Pomalidomide-based Homo-PROTACs

Published on: May 15, 2019

在黄瓜中捕获的伊米普拉的原体[7]uril

Jiyeon Lee¹, Hyerim Kim¹, Hochan Lee^1,2

¹Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.

The journal of physical chemistry. A

|December 13, 2023

概括

确定像 imipramine 这样的分子中的质子化位点是具有挑战性的. 这项研究使用电喷射电离离离子移动性光谱法-用甲[7]uril进行质谱法来区分imipramine原体,帮助宿主-客人化学研究.

科学领域:

分析化学分析化学
超分子化学超分子化学
物理化学物理化学

背景情况:

具有多个质子可访问位置的小分子在生物系统和宿主-客人化学中至关重要.
质子状态显著影响主机-客户互动,但识别这些网站是复杂的.
伊米普拉胺是一种具有两个已知的质子化位点的分子,使其成为研究质子化状态的相关模型.

研究的目的:

开发和应用一种方法来区分不同质子位点 (原体) 的imipramine.
为了研究黄素[7]uril作为宿主分子在分化 imipramine 前基质子中的实用性.
为了能够捕获和研究能量较不有利的原体.

主要方法:

使用了电子喷雾电离离子移动性光谱-质谱 (ESI-IM-MS).
黄瓜[7]uril被用作宿主分子,以与imipramine一起形成宿主-客人复合体.
分析的重点是根据它们的移动性和质量来区分产生的离子.

主要成果:

通过ESI-IM-MS策略,成功地区分了质子化imipramine的两个原体.
宿主-客人复合体形成与黄[7]uril提供了一个明确的区分原体.
该方法允许检测能量较不有利的imipramine原体.

结论:

ESI-IM-MS与甲[7]uril结合是一种有效的技术,用于解决小分子的原体.
这种方法促进了对宿主-客人化学中的质子化状态的理解.
该方法在研究复杂的分子相互作用和识别不太稳定的物种方面具有潜在的应用.

更多相关视频

One-pot Microwave-assisted Conversion of Anomeric Nitrate-esters to Trichloroacetimidates

One-pot Microwave-assisted Conversion of Anomeric Nitrate-esters to Trichloroacetimidates

Published on: January 15, 2018

Thermostabilization, Expression, Purification, and Crystallization of the Human Serotonin Transporter Bound to S-citalopram

Thermostabilization, Expression, Purification, and Crystallization of the Human Serotonin Transporter Bound to S-citalopram

Published on: November 27, 2016

相关概念视频

Preparation of 1° Amines: Hofmann and Curtius Rearrangement Overview

Preparation of 1° Amines: Hofmann and Curtius Rearrangement Overview

In the presence of an aqueous base and a halogen, primary amides can lose the carbonyl (as carbon dioxide) and undergo rearrangement to form primary amines. This reaction, called the Hofmann rearrangement, can produce primary amines (aryl and alkyl) in high yields without contamination by secondary and tertiary amines.

Preparation of Amines: Reductive Amination of Aldehydes and Ketones

Preparation of Amines: Reductive Amination of Aldehydes and Ketones

Carbonyl compounds and primary amines undergo reductive amination first to produce imines, followed by secondary amines in the same reaction mixture, using selective reducing agents like sodium cyanoborohydride or sodium triacetoxyborohydride. Reductive amination produces different degrees of substitution of amines depending on the starting amine substrate.

Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists

Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists

Serotonin, a crucial neurotransmitter synthesized by enterochromaffin cells, plays a cardinal role in regulating gastrointestinal (GI) motility. With over 90% of the body's total serotonin in the GI tract, its influence on digestive processes is profound. Serotonin is swiftly released upon various stimuli, such as food boluses or certain drugs, triggering intrinsic sensory neurons in the myenteric plexus and extrinsic vagal and spinal sensory neurons. This leads to the activation of the...

Preparation of 1° Amines: Hofmann and Curtius Rearrangement Mechanism

Preparation of 1° Amines: Hofmann and Curtius Rearrangement Mechanism

The Hofmann and Curtius rearrangement reactions can be applied to synthesize primary amines from carboxylic acid derivatives such as amides and acyl azides. In the Hofmann rearrangement, a primary amide undergoes deprotonation in the presence of a base, followed by halogenation to generate an N-haloamide. A second proton abstraction produces a stabilized anionic species, which rearranges to an isocyanate intermediate via an alkyl group migration from the carbonyl carbon to the neighboring...