[1.1.1]プロペランの多成分機能化によるBCPアルキアミンの一般的およびモジュール化アプローチ
Weichen Huang1, Yongxiang Zheng1, Sebastian Keess2
1Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States.
Journal of the American Chemical Society
|February 21, 2023
まとめ
研究者は,より迅速な薬剤発見を可能にする,ビサイクロ[1.1.1]ペンタン (BCP) ビルディングブロックを合成するためのモジュラー戦略を開発した. この方法は,BCPスキャフォールドにフッ素アルキル基やその他の機能を効率的に組み込む.
科学分野:
- 薬剤化学
- 有機合成
- 薬物の発見
背景:
- Bicyclo[1.1.1]pentane (BCP) モチーフは,パラ代替ベンゼンの有価な医薬品用バイオイソステルである.
- 現在,BCP構成要素の合成方法は限られており,複数の段階があり,早期の薬剤発見研究を妨げています.
研究 の 目的:
- 機能化されたBCPアルキラミンの製造のためのモジュラーで異なる戦略を開発する.
- BCPスキャフォールにフッ素アルキル基を導入するための一般的な方法を確立する.
- 硫黄を含むグループをBCPのコアに組み込むための戦略を拡張する.
主な方法:
- 機能化されたBCPの合成のための多要素戦略が開発された.
- フッ素アルキル基はフッ素アルキル硫酸塩を用いて導入された.
- この方法は,サルフォンとチオエーテルを組み込むためのS中心のラジカルに拡張された.
主要な成果:
- 機能化されたBCPアルキラミンの分散製剤のためのモジュール戦略が確立された.
- BCP スキャフォールドにフッ素アルキル基を導入するための一般的な方法が開発された.
- この戦略は,サルフォンとチオエーテルをBCPのコアに組み込むことに成功しました.
結論:
- 開発された多成分戦略により,BCP型のバイオイソステルが迅速に構築できます.
- このアプローチは,新しいBCP誘導体へのアクセスを提供することによって,薬剤発見のアプリケーションを容易にします.
- 合成技術の進歩は,BCPの構成要素の合成の限界を解決します.
関連する概念動画
Preparation of Alkynes: Alkylation Reaction
10.4K
Introduction
Alkylation of terminal alkynes with primary alkyl halides in the presence of a strong base like sodium amide is one of the common methods for the synthesis of longer carbon-chain alkynes. For example, treatment of 1-propyne with sodium amide followed by reaction with ethyl bromide yields 2-pentyne.
Alkylation of terminal alkynes with primary alkyl halides in the presence of a strong base like sodium amide is one of the common methods for the synthesis of longer carbon-chain alkynes. For example, treatment of 1-propyne with sodium amide followed by reaction with ethyl bromide yields 2-pentyne.
10.4K
Radical Substitution: Allylic Bromination
5.2K
In organic synthesis, the formation of products can be altered by changing the reaction conditions. For example, a dibromo addition product is formed when propene is treated with bromine at room temperature. In contrast, propene undergoes allylic substitution in non-polar solvents at high temperatures to give 3-bromopropene. In order to avoid the addition reaction, the bromine concentration must be kept as low as possible throughout the reaction. This can be achieved using N-bromosuccinimide...
5.2K
Preparation of Amines: Alkylation of Ammonia and Amines
3.6K
Alkylation is one of the methods used to prepare amines. Direct alkylation of ammonia or a primary amine with an alkyl halide gives polyalkylated amines along with a quaternary ammonium salt through successive SN2 reactions. This process of making the quaternary salt through the direct alkylation method is called exhaustive alkylation.
Each alkylation step makes the nitrogen center more nucleophilic, which triggers successive alkylations until a quaternary ammonium salt is formed. Considering...
Each alkylation step makes the nitrogen center more nucleophilic, which triggers successive alkylations until a quaternary ammonium salt is formed. Considering...
3.6K
Alkynes to Aldehydes and Ketones: Hydroboration-Oxidation
18.6K
Introduction
One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.
One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.
18.6K
Preparation of 1° Amines: Gabriel Synthesis
3.7K
Direct alkylation is not a suitable method for synthesizing amines because it produces polyalkylated products. Gabriel synthesis is the most preferred method to exclusively make primary amines. The method uses phthalimide, which contains a protected form of nitrogen that participates in alkylation only once to predominantly give primary amines.
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...
3.7K
Preparation of Alkynes: Dehydrohalogenation
16.1K
Introduction
Alkynes can be prepared by dehydrohalogenation of vicinal or geminal dihalides in the presence of a strong base like sodium amide in liquid ammonia. The reaction proceeds with the loss of two equivalents of hydrogen halide (HX) via two successive E2 elimination reactions.
Alkynes can be prepared by dehydrohalogenation of vicinal or geminal dihalides in the presence of a strong base like sodium amide in liquid ammonia. The reaction proceeds with the loss of two equivalents of hydrogen halide (HX) via two successive E2 elimination reactions.
16.1K


