Results 1 to 10 of about 11,513 (251)

Modular synthesis of chiral 1,2-dihydropyridines via Mannich/Wittig/cycloisomerization sequence that internally reuses waste

open access: yesNature Communications, 2021
1,2-Dihydropyridines are valuable precursors for the synthesis of biologically relevant piperidines and pyridines, but the methods for their synthesis are underdeveloped.
Bo-Shuai Mu   +4 more
doaj   +1 more source

Synthesis of Novel IP Agonists via N-Aminoethyl Cyclic Amines Prepared by Decarboxylative Ring-Opening Reactions

open access: yesMolecules, 2012
An efficient synthesis of a highly potent and selective IP (PGI2 receptor) agonist that is not structurally analogous to PGI2 is described. This synthesis is accomplished through the following key steps: Nucleophilic ring-opening of 3-(4-chlorophenyl ...
Masashi Uchida   +8 more
doaj   +1 more source

A Versatile Class of 1,4,4-Trisubstituted Piperidines Block Coronavirus Replication In Vitro

open access: yesPharmaceuticals, 2022
There is a clear need for novel antiviral concepts to control SARS-CoV-2 infection. Based on the promising anti-coronavirus activity observed for a class of 1,4,4-trisubstituted piperidines, we here conducted a detailed analysis of the structure–activity
Sonia De Castro   +13 more
doaj   +1 more source

Copper(I)-Catalyzed Cross-Coupling of 1-Bromoalkynes with N-Heterocyclic Organozinc Reagents

open access: yesMolecules, 2022
Nitrogen-containing heterocycles represent the majority of FDA-approved small-molecule pharmaceuticals. Herein, we describe a synthetic method to produce saturated N-heterocyclic drug scaffolds with an internal alkyne for elaboration.
Christian Frabitore   +2 more
doaj   +1 more source

Study on Multi Drug Resistant Opportunistic Pathogens Obtained from Clinical Settings of Tamil Nadu for Developing Novel Alternative Therapeutics

open access: yesJournal of Pure and Applied Microbiology, 2019
Opportunistic pathogens prevail in the hospital environment, and utensils are the root cause of severe nosocomial infection. These pathogens exhibit high antibiotic resistance due to constant exposure to drug therapy.
Rajendran Venkatasubramani   +1 more
doaj   +1 more source

Crystal structure of 4-bromo-2-[(E)-N-(2,2,6,6-tetramethylpiperidin-4-yl)carboximidoyl]phenol dihydrate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title hydrate, C16H23BrN2O·2H2O, the organic molecule features a strong intramolecular O—H...N hydrogen bond. The piperidine ring, in addition, adopts a chair conformation with the exocyclic C—N bond in an equatorial orientation.
Joel T. Mague   +4 more
doaj   +1 more source

Intermolecular [3+3] ring expansion of aziridines to dehydropiperi-dines through the intermediacy of aziridinium ylides

open access: yesNature Communications, 2020
Traditional synthesis of stereodefined piperidines requires selective installation of functional groups that can lower efficiency and modularity. Here, the authors assemble stereochemically complex and highly substituted dehydropiperidines via an ...
Josephine Eshon   +6 more
doaj   +1 more source

1-[(3-Nitrophenyl)(piperidin-1-yl)methyl]piperidine [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2012
In the crystal structure of the title compound, C17H25N3O2, one-dimensional chains are formed via intermolecular C—H...O hydrogen bonds along the a axis.
Zhe-Qin Wang, Yi Ma
openaire   +3 more sources

Ring Expansion of Vinylaziridines through the Strain-Release Pericyclic Reaction: Recent Developments and Applications

open access: yesMolecules, 2013
Recent syntheses of azetidines, pyrrolidines, piperidines and azepines through cycloaddition or sigmatropic rearrangements of vinylaziridines are described. Applications to natural product synthesis and mechanistic investigations are also summarized.
Yu Mi Heo, Seung-Mann Paek
doaj   +1 more source

Highly functionalized piperidines: Free radical scavenging, anticancer activity, DNA interaction and correlation with biological activity

open access: yesJournal of Advanced Research, 2018
Twenty-five piperidines were studied as potential radical scavengers and antitumor agents. Quantitative interaction of compounds with ctDNA using spectroscopic techniques was also evaluated.
Suvankar Das   +14 more
doaj   +1 more source

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