持続的な根の均衡によって活性化されるヴィチシンAとDの合成

Kevin J Romero¹, Mitchell H Keylor¹, Markus Griesser²

¹Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States.

Journal of the American Chemical Society

|March 12, 2020

まとめ

研究者らは,複合的なレスベラトロールテトラマーであるビチシンAとビチシンDを初めて完全合成しました.この新しい電気化学的方法は,さらなる薬学研究のためにこれらの化合物への迅速なアクセスを提供します.

科学分野:

有機化学
自然製品合成
薬剤化学

背景:

ヴィチシンAとヴィチシンDのようなレスベラトロールテトラメアは,潜在的な薬理学的活動を持つ複雑な天然製品である.
これまでの合成経路は困難で長いものでした
これらの分子の合成を理解することは生物学的機能の探求に不可欠です

研究の目的:

ヴィチシンAとヴィチシンDの最初の完全合成を報告する.
効率的で迅速な合成戦略を開発し, ヴィチシンのコア構造にアクセスする.
薬理学的評価のために十分な量のビチシンAとビチシンDを供給する.

主な方法:

電気化学的生成と,持続的なラジカルの選択的二元化により,対称な二元体を形成する.
望ましいC3c-C8b同位体への対称ディマーの熱性同位体化により,ヴィチシンコアを確立する.
ビチシンAとビチシンDを生成する酸媒介による連続的な再編成で,提案された生体生成を模倣する.

主要な成果:

ヴィチシンAとヴィチシンDの完全な合成が成功しました
ヴィチシン核への効率的な侵入を可能にする高速合成経路の開発
提案された合成戦略を Nature のアプローチと同様のものとして支持する計算的研究.

結論:

開発された合成方法論は,ビチシンAとビチシンDへの迅速なアクセスを提供します.
この効率的な合成は,これらのレスベラトロールテトラメアの薬理学的可能性の詳細な調査を容易にするでしょう.
このアプローチは,他の複雑な天然製品を合成するための貴重なプラットフォームを提供します.

さらに関連する動画

08:18

Author Spotlight: Unraveling Vitamin A Transport Mechanisms — Linking Liver Receptors to Vision Health Through RBPR2 and RBP4 Interactions

Published on: October 4, 2024

1.4K

05:03

Author Spotlight: Investigating Physiological Functions of Vitamin A Transporters Using HPLC-Based Vitamin A Profiling

Published on: December 27, 2024

1.5K

関連する概念動画

01:10

Radical Reactivity: Steric Effects

2.3K

The presence of electron-donating, electron-withdrawing, or conjugating groups adjacent to a radical center, imparts electronic stabilization to the radicals. Examples of such electronically-stabilized radicals are triphenylmethyl, tetramethylpiperidine‐N‐oxide, and 2,2‐diphenyl‐1‐picrylhydrazyl. These radicals are remarkably stable and are known as persistent radicals. Some of the persistent radicals can even be isolated and purified.
Along with electronic...

2.3K

00:51

Radical Formation: Elimination

2.1K

Another method of radical formation is the elimination process. It is the opposite of the addition route and is driven by the instability of the radical. For example, as depicted in Figure 1, dibenzoyl peroxide yields a pair of unstable radicals upon homolysis. Given its instability, this radical spontaneously undergoes elimination via a C–C bond cleavage to form a relatively more stable phenyl radical. The mechanism involves cleavage of the bond between the α and β positions with respect...

2.1K

01:20

Radical Autoxidation

2.9K

The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...

2.9K

01:11

Radical Reactivity: Overview

2.6K

Radicals, the highly reactive species, gain stability by undergoing three different reactions. The first reaction involves a radical-radical coupling, in which a radical combines with another radical, forming a spin‐paired molecule. The second reaction is between a radical and a spin‐paired molecule, generating a new radical and a new spin‐paired molecule. The third reaction is radical decomposition in a unimolecular reaction, forming a new radical and a spin‐paired...

2.6K

01:28

Stability of Conjugated Dienes

4.0K

Introduction
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.

4.0K

01:28

Diels–Alder Reaction Forming Cyclic Products: Stereochemistry

4.6K

The Diels–Alder reaction is one of the robust methods for synthesizing unsaturated six-membered rings. The reaction involves a concerted cyclic movement of six π electrons: four π electrons from the diene and two π electrons from the dienophile.