関連する実験動画
Updated: Jun 25, 2026

07:16
Biochemical Titration of Glycogen In vitro
Published on: November 25, 2013
C2-アミドグライコシレーション. 窒素移転の範囲とメカニズム
1Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
Journal of the American Chemical Society
|August 15, 2002
まとめ
この研究は,2-N-アシル-2-デオキシ-ベータ-ピラノシドを合成するための新しいワンポット反応を導入しています. この方法は,ステレオ選択的な窒素導入とグリコシド結合形成により,複雑なグリココンジュガートを効率的に生成します.
科学分野:
- 有機化学 オーガニック・ケミストリー
- 炭水化物化学 炭水化物の化学
- 合成化学 合成化学とは
背景:
- グライコシレーション反応は,炭水化物の化学において根本的な役割を果たします.
- 改変炭水化物を合成するための効率的な方法の開発は,薬剤発見とグリコバイオロジーにとって極めて重要です.
- ピラノシドのC2位置に機能性を導入するには,多くの場合,多段階の手順が必要です.
研究 の 目的:
- 新規のワンポットC2-アミドグリコシライゼーション反応を開発する.
- 簡単に入手可能なグリカルから2-N-アシル-2-デオキシ-ベータ-ピラノシドを合成する.
- C2位置でのアミド機能のステレオ選択的導入を達成するために.
主な方法:
- シアントレン-5酸化物とTf2Oを用いたグリカルドナーの活性化.
- その後の反応は,アミドヌクレオフィルとグリコシル受容体によるものです.
- 低温NMRスペクトロスコーピーは,機械学的研究のために同位体ラベル (15N,18O) を付けています.
主要な成果:
- ワンポット手順で様々なC2-アミドグリコ結合物の合成に成功しました.
- ステレオ選択的なC2窒素移転とグリコシド結合形成の実証.
- C2-スルフォニウムグリコシルイミダートとオクサゾリンを含む主要な中間物質の特定.
結論:
- 説明されているワンポット反応は,C2-アミドグリコ結合体への効率的な経路を提供します.
- この方法論は,さまざまなアミドの機能を組み込むことを可能にします.
- この研究は,この新しい酸化性グリコシル化プロセスに関するメカニズム的な洞察を提供します.
関連する概念動画
What is Glycolysis?
Overview
Cells make energy by breaking down macromolecules. Cellular respiration is the biochemical process that converts "food energy" (from the chemical bonds of macromolecules) into chemical energy in the form of adenosine triphosphate (ATP). The first step of this tightly regulated and intricate process is glycolysis. The word glycolysis originates from the Latin glyco (sugar) and lysis (breakdown). Glycolysis serves two main intracellular functions: generating ATP and generating...
Cells make energy by breaking down macromolecules. Cellular respiration is the biochemical process that converts "food energy" (from the chemical bonds of macromolecules) into chemical energy in the form of adenosine triphosphate (ATP). The first step of this tightly regulated and intricate process is glycolysis. The word glycolysis originates from the Latin glyco (sugar) and lysis (breakdown). Glycolysis serves two main intracellular functions: generating ATP and generating...
Sugars as Energy Storage Molecules
Sugar (a simple carbohydrate) metabolism (chemical reactions) is a classic example of the many cellular processes that use and produce energy. Living things consume sugar as a major energy source because sugar molecules have considerable energy stored within their bonds. Consumed carbohydrates have their origins in photosynthesizing organisms like plants. During photosynthesis, plants use the energy of sunlight to convert carbon dioxide gas into sugar molecules, like glucose. Because this...
Glucose Transporters
Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the movement of other hexoses such as fructose, mannose, and galactose.
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
Carbohydrate Metabolism
Carbohydrates are polymers composed of molecules containing atoms of carbon, hydrogen and oxygen. One gram of carbohydrate can provide four kilo-calories of energy, which makes it the most efficient instant energy source.
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in the...
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in the...
Sugars as Energy Storage Molecules
Sugar (a simple carbohydrate) metabolism (chemical reactions) is a classic example of the many cellular processes that use and produce energy. Living things consume sugar as a major energy source because sugar molecules have considerable energy stored within their bonds. Consumed carbohydrates have their origins in photosynthesizing organisms like plants. During photosynthesis, plants use the energy of sunlight to convert carbon dioxide gas into sugar molecules, like glucose. Because this...
Hormones Regulating Blood Glucose
Insulin is released by beta cells of the pancreas when blood glucose levels are high. It facilitates glucose absorption and utilization in insulin-dependent cells with insulin receptors on their plasma membranes. Insulin promotes glucose uptake by increasing the number of glucose transport proteins in the cell membrane, allowing glucose to enter the cell. As a result, glucose utilization and ATP production are enhanced.
In addition to accelerating glucose uptake and utilization, insulin has...
In addition to accelerating glucose uptake and utilization, insulin has...

