Theme Issue in Memory to Professor Jiro Tsuji (1927–2022) DOI Open Access
Ewa Kowalska, Shuaizhi Zheng

Catalysts, Journal Year: 2024, Volume and Issue: 14(7), P. 396 - 396

Published: June 21, 2024

The importance of catalysis is obvious and unquestionable, especially bearing in mind that about 90% all commercially produced chemical products involve catalysts at some step their manufacture [...]

Language: Английский

Catalytic macrocyclization of unactivated C(sp3)-H bond in natural product synthesis DOI Creative Commons
Zhuo Wang

Tetrahedron Green Chem, Journal Year: 2025, Volume and Issue: unknown, P. 100064 - 100064

Published: Jan. 1, 2025

Language: Английский

Citations

0

Multistep Cascade Catalyzed by a Single-Chiral Lewis Acid: Efficient Asymmetric Synthesis of Macrocyclic Chiral Dilactones and Dilactams DOI Creative Commons
Bailin Wang,

Jie-Qiang Yu,

Qian Zhang

et al.

JACS Au, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Language: Английский

Citations

0

A General Medium-to-Large Sized Ring Synthesis Enabled by Copper-Catalyzed Difluoroalkylamidation Cyclization of Alkynes DOI
Jing Ren, Linfeng He, Jinlong Li

et al.

Organic Letters, Journal Year: 2025, Volume and Issue: unknown

Published: May 9, 2025

This paper describes a novel coordinating activation strategy that enables the synthesis of medium-to-large sized rings (11-17 members) via an unprecedented difluoroalkylamidation cyclization alkynes. method provides efficient platform for accessing skeleton-diverse difluoroalkyl-containing cyclic enamides with complete regio- and stereoselectivity. The protocol features broad substrate compatibility, functional group tolerance, ease use at dilution concentrations (50 mM) are not high. Moreover, synthetic utility this difunctional is underscored by its application in late-stage modification complex molecules. Additionally, click reaction facilitates derivation alkynyl-substituted products, demonstrating methodology's potential biological sciences.

Language: Английский

Citations

0

Applications of Supramolecular Polymers Generated from Pillar[n]arene-Based Molecules DOI Open Access
Xu Li, Yan Jin, Nansong Zhu

et al.

Polymers, Journal Year: 2023, Volume and Issue: 15(23), P. 4543 - 4543

Published: Nov. 27, 2023

Supramolecular chemistry enables the manipulation of functional components on a molecular scale, facilitating "bottom-up" approach to govern sizes and structures supramolecular materials. Using dynamic non-covalent interactions, polymers can create materials with reversible degradable characteristics abilities self-heal respond external stimuli. Pillar[n]arene represents novel class macrocyclic hosts, emerging after cyclodextrins, crown ethers, calixarenes, cucurbiturils. Its significance lies in its distinctive structure, comparing an electron-rich cavity two finely adjustable rims, which has sparked considerable interest. Furthermore, straightforward synthesis, uncomplicated functionalization, remarkable properties pillar[n]arene based interactions make it excellent candidate for material construction, particularly generating interpenetrating polymers. Polymers resulting from involving find potential various applications, including fluorescence sensors, substance adsorption separation, catalysis, light-harvesting systems, artificial nanochannels, drug delivery. In this context, we provide overview these recent frontier research fields use pillar[n]arene-based polymers, serves as source inspiration creation innovative polymer derived derivatives.

Language: Английский

Citations

7

Indole-Based Macrocyclization by Metal-Catalyzed Approaches DOI Creative Commons
Subba Rao Cheekatla, Debashis Barik,

Geethanjali Anand

et al.

Organics, Journal Year: 2023, Volume and Issue: 4(3), P. 333 - 363

Published: July 4, 2023

This review is dedicated to the different varieties of macrocycles synthesis bearing indole units in their architecture by metal-catalyzed strategies. The progress new macrocyclization approaches persisted be a keen area research. Macrocycles contain wide variety molecules, and among those, heteroaryl motifs are valuable constituents that provide an attractive feature macrocyclic systems. Indole represents one privileged pharmacophores against targets with various biological applications. Among nitrogen-based heterocycles, plays prominent role organic synthesis, medicinal chemistry, pharmaceuticals, natural products agrochemicals, dye fragrances, drug design. These scaffolds widely distributed several bioactive synthetic constructed specific biochemical target most common naturally occurring molecules. Due its immense importance, novel for indole-based has increased steadily. majority proceeds through macrolactamization macrolactonization, as well C–C bond process described ring-closing metathesis (RCM) coupling reactions. macrocyclizations, considered powerful tools chemists design macrocycles. aims give comprehensive insight into scaffold catalyzed transition metals emerged literature over last two decades. We hope this will persuade search strategies protocols.

Language: Английский

Citations

6

Recent Progress on Transition Metal Catalyzed Macrocyclizations Based on C‐H Bond Activation at Heterocyclic Scaffolds DOI

Sarbojit Das,

Tapan Kumar Pradhan, Rajarshi Samanta

et al.

Chemistry - An Asian Journal, Journal Year: 2024, Volume and Issue: unknown

Published: June 24, 2024

Abstract Macrocycles are essential in protein‐protein interactions and the preferential intake of bioactive scaffolds. commonly synthesized by late‐stage macrolactonizations, macrolactamizations, transition metal‐catalyzed ring‐closing metathesis, S−S bond‐forming reactions, copper‐catalyzed alkyne–azide cycloaddition. Recently, C−H activation strategies have gained significant interest among chemists to synthesize macrocycles. This article provides a comprehensive overview macrocyclization via bond functionalization heterocycle‐containing peptides, annulations, heterocycle‐ring construction through direct functionalization. In first part, palladium salt catalyzed coupling with indolyl C(sp 3 )−H 2 bonds for is reported. The second part summarizes rhodium‐catalyzed macrocyclizations site‐selective Earth‐abundant, less toxic 3d metal Mn‐catalyzed cyclizations reported latter part. summary expected spark emerging methods macrocycle production organic synthesis chemical biology practitioners, helping develop discipline. We hope that this mini‐review will also inspire synthetic explore new broadly applicable C−C intramolecular activation.

Language: Английский

Citations

1

Diastereoselective Anomeric C(sp3)‐H Cyclization Towards the Design of New Cyclophane‐Braced Glycopeptides DOI Creative Commons
Sakna Bazzi,

Ameni Hadj Mohamed,

Dmytro Ryzhakov

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 8, 2024

Here we report a macrocyclization route towards the synthesis of glycophane peptides by selective C-H arylation anomeric bond. This approach demonstrates power Pd-catalysis activation to access unusual cyclic peptides.

Language: Английский

Citations

1

Rhodium‐Catalyzed Regioselective C7Ar‐Functionalization of Tryptophan with Quinones and its Late Stage Peptide Exemplification DOI

Disha Tank,

Narendra Dinkar Kharat,

Kiran Bajaj

et al.

Asian Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: 12(12)

Published: Nov. 10, 2023

Abstract Pivaloyl‐directed Rh(III)‐catalyzed regioselective C7 Ar ‐H functionalization of protected tryptophans were accomplished with 1,4‐benzoquinones, furnishing a series quinone‐appended tryptophan‐based unnatural amino acids in high yields. Further, the late stage on tryptophan‐containing dipeptides was achieved 1,4‐benzoquinones moderate reactivity.

Language: Английский

Citations

2

Diastereoselective Anomeric C(sp3)‐H Cyclization Towards the Design of New Cyclophane‐Braced Glycopeptides DOI Creative Commons
Sakna Bazzi,

Ameni Hadj Mohamed,

Dmytro Ryzhakov

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 8, 2024

Abstract Here we report a macrocyclization route towards the synthesis of glycophane peptides by selective C−H arylation anomeric bond. This approach demonstrates power Pd‐catalysis activation to access unusual cyclic peptides.

Language: Английский

Citations

0

Theme Issue in Memory to Professor Jiro Tsuji (1927–2022) DOI Open Access
Ewa Kowalska, Shuaizhi Zheng

Catalysts, Journal Year: 2024, Volume and Issue: 14(7), P. 396 - 396

Published: June 21, 2024

The importance of catalysis is obvious and unquestionable, especially bearing in mind that about 90% all commercially produced chemical products involve catalysts at some step their manufacture [...]

Language: Английский

Citations

0