Results 21 to 30 of about 21,344 (285)

Aza-Oxa-Triazole Based Macrocycles with Tunable Properties: Design, Synthesis, and Bioactivity

open access: yesMolecules, 2022
A modular platform for the synthesis of tunable aza-oxa-based macrocycles was established. Modulations in the backbone and the side-chain functional groups have been rendered to achieve the tunable property.
Subba Rao Cheekatla   +4 more
doaj   +1 more source

Parallel Synthesis of Peptide-Like Macrocycles Containing Imidazole-4,5-dicarboxylic Acid

open access: yesMolecules, 2012
We prepared a series of peptide-like 14-membered macrocycles containing an imidazole-4,5-dicarboxylic acid scaffold by using known coupling reagents and protecting group strategies.
Paul W. Baures   +2 more
doaj   +1 more source

Macrocycles of Higher ortho-Phenylenes: Assembly and Folding [PDF]

open access: yes, 2019
Higher-order structure in abiotic foldamer systems represents an important but largely unrealized goal. As one approach to this challenge, covalent assembly can be used to assemble macrocycles with foldamer subunits in well-defined spatial relationships.
Viraj Kirinda (6668226)   +5 more
core   +1 more source

Insight into functionalized-macrocycles-guided supramolecular photocatalysis

open access: yesBeilstein Journal of Organic Chemistry, 2021
Due to the unique characteristics of macrocycles (e.g., the ease of modification, hydrophobic cavities, and specific guest recognition), they can provide a suitable environment to realize photocatalysis via noncovalent interactions with different ...
Minzan Zuo   +4 more
doaj   +1 more source

Hexaaza and octaaza macrocycles with 2-hydroxy 3,5-dimethylbenzyl pendant arms [PDF]

open access: yes, 1997
New 18-membered hexaaza (3 and 4) and 24-membered octaaza (7 and 8) macrocycles with 2-hydroxy-3,5-dimethylbenzyl pendant arms have been prepared via a Mannich type reaction of the corresponding macrocycles [(1 and 2) and (5 and 6) respectively] with 2,4-
Evagorou, E.G.   +3 more
core   +1 more source

Design, synthesis and applications of responsive macrocycles

open access: yesCommunications Chemistry, 2020
Macrocycles have been widely studied for their structure-specific and highly selective recognition properties. Here the authors review the design, synthesis and applications of photo-, pH- and redox-responsive macrocycles.
Jingjing Yu, Dawei Qi, Jianwei Li
doaj   +1 more source

Chemically Fueled Assembly of Macrocycles Comprising Multiple Transient Bonds [PDF]

open access: yes, 2019
Dissipative (nonequilibrium) assembly powered by chemical fuels has great potential for the creation of new adaptive chemical systems. However, while molecular assembly at equilibrium is routinely used to prepare complex architectures from polyfunctional
Mohammad Mosharraf, Hossain   +2 more
core   +1 more source

Alternating behavior in furan-acetylene macrocycles reveals the size-dependency of Hückel’s rule in neutral molecules

open access: yesCommunications Chemistry, 2023
Aromaticity can be assigned by Hückel’s rule, which predicts that planar rings with delocalized (4n + 2) π-electrons are aromatic, whereas those with 4n π-electrons are antiaromatic.
Yuval Rahav   +4 more
doaj   +1 more source

Indole-Based Macrocyclization by Metal-Catalyzed Approaches

open access: yesOrganics, 2023
This review is dedicated to the different varieties of macrocycles synthesis bearing indole units in their architecture by metal-catalyzed strategies.
Subba Rao Cheekatla   +4 more
doaj   +1 more source

Entry point into new trimeric and tetrameric imide-based macrocyclic esters derived from isophthaloyl dichloride and methyl 6-aminonicotinate [PDF]

open access: yes, 2012
The one-step reaction of isophthaloyl dichloride with the 2-aminopyridine derivative (methyl 6-aminonicotinate) yields (i) a trimer-based macrocycle (EsIO)3 and (ii) a tetramer-based macrocycle (EsIO)4 in modest isolated synthetic yields (total of 25 ...
Gallagher, John F.   +3 more
core   +1 more source

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