Results 61 to 70 of about 28,198,830 (257)

Use of Emerging C–H Functionalization Methods to Implement Strategies for the Divergent Total Syntheses of Bridged Polycyclic Natural Products [PDF]

open access: yes, 2023
Carbon–hydrogen (C–H) bonds are ubiquitous in complex natural products. Over the past three decades, many methods to convert C–H bonds distal from functional groups, which were generally considered inert, have been developed.
Richmond, Sarpong, Goh, Sennari
core   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Steric, Electronic and Conformational Synergistic Effects in the Au(I)-catalyzed alpha-C-H Bond Functionalization of Tertiary Amines [PDF]

open access: yes, 2022
Direct C-H bond functionalization is a useful strategy for the straightforward formation of C-C and C-Heteroatom bonds. In the present work, a unique approach for the challenging electrophilic Au-catalyzed alpha-C-H bond functionalization of tertiary ...
David F. , León Rayo   +4 more
core   +3 more sources

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Remote C−H functionalization using radical translocating arylating groups

open access: yesNature Communications, 2018
Selective remote functionalization of aliphatic C(sp3)−H bonds is highly challenging and often requires transition metals and/or directing groups. Here, the authors show the γ-arylation of aliphatic alcohols via a two-step radical translocation and ...
Florian W. Friese   +2 more
doaj   +1 more source

Cobalt(III)-catalyzed asymmetric ring-opening of 7-oxabenzonorbornadienes via indole C–H functionalization

open access: yesNature Communications, 2023
Asymmetric ring-opening (ARO) reactions, which can help quickly build molecular complexity, have not been extensively shown via β-oxygen elimination. Here, the authors report a cobalt(III)-catalyzed ARO reaction, providing mechanistic insights and the ...
Yang Zheng   +4 more
doaj   +1 more source

Novel Strategies in C-H Oxidations for Natural Product Diversification—A Remote Functionalization Application Summary

open access: yesFrontiers in Chemistry, 2021
Selectively activating the distal inactive C-H bond for functionalization is one of the on-going challenge in organic synthetic chemistry. In recent years, benefiting from the development of selective synthesis methods, novel methodologies not only make ...
Huang Junrong   +11 more
doaj   +1 more source

Palladium-Catalyzed Directed para C-H Functionalization of Phenols

open access: yes, 2016
Various practical methods for the selective C-H functionalization of the ortho and recently also of the meta position of an arene have already been developed.
BAG, S   +17 more
core   +1 more source

Radical‐Promoted Distal C‐H Functionalization of C(sp3) Centers with Fluorinated Moieties

open access: yes, 2020
International audienceDue to their unique properties, fluorinated scaffolds are pivotal compounds in pharmaceuticals, agrochemicals and materials science.
Tatiana Besset   +5 more
core   +1 more source

Stereoselective C−B and C−H Bonds Functionalization of polyBorylated Alkenes [PDF]

open access: yes, 2023
Alkenes are fundamental functional groups which feature in various materials and bioactive molecules; however, efficient divergent strategies for their stereodefined synthesis are difficult.
Narendra K., Vaishanv   +3 more
core   +1 more source

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