Results 51 to 60 of about 40,681 (241)

Synthesis of tetrafluorinated piperidines from nitrones via a visible-light-promoted annelation reaction

open access: yesBeilstein Journal of Organic Chemistry, 2020
A method for the one-step construction of 3,3,4,4-tetrafluorinated piperidines from nitrones and readily accessible tetrafluorinated iodobromobutane is described.
Vyacheslav I. Supranovich   +2 more
doaj   +1 more source

Regio- and Stereoselective Palladium-Catalyzed C(sp3)-H Arylation of Pyrrolidines and Piperidines with C(3) Directing Groups.

open access: yesOrganic Letters, 2018
The selective synthesis of cis-3,4-disubstituted pyrrolidines and piperidines is achieved by a Pd-catalyzed C-H arylation with excellent regio- and stereoselectivity using an aminoquinoline auxiliary at C(3). The arylation conditions are silver free, use
Daniele Antermite   +2 more
semanticscholar   +1 more source

Cyclohydrocarbonylation-based strategy toward poly- susbtituted piperidines

open access: yes, 2011
Convenient accesses to enantiomerically pure 2-, 2,3-, 2,6-, 2,3,6-substituted piperidines and 1,4-substituted indolizine are described. At first, indium-mediated aminoallylation and -crotylation of aldehydes with (R)-phenylglycinol or (1R,2S)-1-amino-2 ...
GIRARD N.   +5 more
core   +1 more source

Enantioselective Synthesis of α-(Hetero)aryl Piperidines Through Asymmetric Hydrogenation of Pyridinium Salts and Its Mechanistic Insights

open access: yesOrganic Letters, 2018
Enantioselective synthesis of α-aryl and α-heteroaryl piperidines is reported. The key step is an iridium-catalyzed asymmetric hydrogenation of substituted N-benzyl pyridinium salts. High levels of enantioselectivity up to 99.3:0.7 er were obtained for a
Bo Qu   +20 more
semanticscholar   +1 more source

Ultrasound‐Actuated Gene Editing in Human Kidney Organoids

open access: yesAdvanced Science, EarlyView.
Peptide‐stabilized nanoemulsions enable spatially controlled, ultrasound‐triggered delivery of gene‐editing proteins deep within human kidney organoid tissues. Focused acoustic pulses drive droplet vaporization, propelling cargo into target renal cells while preserving native tissue microarchitecture. This non‐viral platform improves both the depth and
Michael A. Miller   +6 more
wiley   +1 more source

Mass-spectral investigation of pyrrolo[3,2-c]piperidines

open access: yes, 2020
The dissociative ionization of derivatives of pyrrolo[3,2-c]piperidines and their deutero analogs was studied. The successive elimination of the substituents in the piperidine ring, which leads to its aromatization, and cleavage of this ring via a ...
Stashenko E.E.   +5 more
core   +2 more sources

Novel chemical entities inhibiting Mycobacterium tuberculosis growth identified by phenotypic high-throughput screening

open access: yesScientific Reports, 2022
We performed a high-throughput phenotypic whole cell screen of Mycobacterium tuberculosis against a diverse chemical library of approximately 100,000 compounds from the AbbVie corporate collection and identified 24 chemotypes with anti-tubercular ...
Anuradha Kumar   +17 more
doaj   +1 more source

Pyrrolidines and Piperidines by Ligand‐Enabled Aza‐Heck Cyclizations and Cascades of N‐(Pentafluorobenzoyloxy)carbamates

open access: yesAngewandte Chemie, 2018
Ligand‐enabled aza‐Heck cyclizations and cascades of N‐(pentafluorobenzoyloxy)carbamates are described. These studies encompass the first examples of efficient non‐biased 6‐exo aza‐Heck cyclizations. The methodology provides direct and flexible access to
I. Hazelden   +4 more
semanticscholar   +1 more source

Temporal Interference Stimulation Enhances Neural Regeneration

open access: yesAdvanced Science, EarlyView.
Temporal interference (TI) stimulation is proposed as a non‐invasive approach to enhance neural regeneration in the deep brain. Theta‐band TI modulation selectively promotes neural progenitor cell differentiation in vitro and augments hippocampal neurogenesis in amouse model of Alzheimer's disease‐like amyloidosis.
Sofia Peressotti   +15 more
wiley   +1 more source

Cyclohydrocarbonylation-Based Strategy toward Poly- Substituted Piperidines

open access: yes, 2016
Convenient accesses to enantiomerically pure 2-, 2,3-, 2,6-, 2,3,6-substituted piperidines and 1,4-substituted indolizine are described. At first, indium-mediated aminoallylation and -crotylation of aldehydes with (R)-phenylglycinol or (1R,2S)-1-amino-2 ...
Nicolas Zill (1755679)   +5 more
core   +1 more source

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