Results 11 to 20 of about 24,641 (321)

Thermogravimetric and Biological Studies of Organotin(IV) Complexes with 4-(Hydroxymethyl)piperidine-1-Carbodithioic Acid [PDF]

open access: bronzeActa Crystallographica Section E Structure Reports Online, 2021
The title compound, NH(4) (+)·C(6)H(10)NS(2) (-), is composed of an ammonium cation and a piperidine-1-carbodithio-ate anion which exhibits positional disorder. The atoms of the ring have a structural disorder and they are divided into two sites, with occupancy factors of 0.584 and 0.426..
Shabbir Hussain   +2 more
openalex   +5 more sources

Methods for the synthesis of polyhydroxylated piperidines by diastereoselective dihydroxylation: Exploitation in the two-directional synthesis of aza-C-linked disaccharide derivatives [PDF]

open access: yes, 2005
Background: Many polyhydroxylated piperidines are inhibitors of the oligosaccharide processing enzymes, glycosidases and glycosyltransferases. Aza-C-linked disaccharide mimetics are compounds in which saturated polyhydroxylated nitrogen and oxygen ...
Adam Nelson   +8 more
core   +3 more sources

Pot, atom and step economic (PASE) synthesis of highly functionalized piperidines: a five-component condensation [PDF]

open access: yes, 2007
The diastereoselective pot, atom and step economic (PASE) synthesis of highly functionalized piperidines has been realized. The procedure simply involves mixing methyl acetoacetate, 2 equiv of aldehyde and 2 equiv of aniline together in the presence of ...
Clarke, Paul A.   +2 more
core   +1 more source

Crystal structure of a tetranuclear CuII complex with an O,N,N′-donor Schiff base ligand: hexa-μ2-acetato-bis(2-{[(2,2,6,6-tetramethylpiperidin-4-yl)imino]methyl}phenolato-κ3O,N,N′)tetracopper(II)

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2016
The title compound, [Cu4(CH3COO)6(C16H23N2O)2], lies across a twofold rotation axis. The asymmetric unit contains two independent CuII ions. The symmetry-unique terminal CuII ion is O,N,N′-coordinated by a 2-{[(2,2,6,6-tetramethylpiperidin-4-yl)imino ...
Guohui Huang, Xiaoxuan Liu
doaj   +1 more source

Scope and Limitations of γ-Valerolactone (GVL) as a Green Solvent to be Used with Base for Fmoc Removal in Solid Phase Peptide Synthesis

open access: yesMolecules, 2019
GVL is a green solvent used in Fmoc-based solid-phase peptide synthesis. It is susceptible to ring opening in the presence of bases such as piperidines, which are used to remove the Fmoc protecting group.
Ashish Kumar   +3 more
doaj   +1 more source

Asymmetric synthesis of γ-chloro-α,β-diamino- and β,γ-aziridino-α-aminoacylpyrrolidines and -piperidines via stereoselective Mannich-type additions of N-(diphenylmethylene)glycinamides across α-chloro-N-sulfinylimines [PDF]

open access: yes, 2012
The asymmetric synthesis of new chiral gamma-chloro-alpha,beta-diaminocarboxylamide derivatives by highly diastereoselective Mannich-type reactions of N-(diphenylmethylene) glycinamides across chiral alpha-chloro-N-p-toluenesulfinylaldimines was ...
Augustyns, Koen   +5 more
core   +3 more sources

Enantioselective Synthesis of Piperidines through the Formation of Chiral Mixed Phosphoric Acid Acetals: Experimental and Theoretical Studies [PDF]

open access: yes, 2014
An enantioselective intramolecular chiral phosphoric acid‐catalyzed cyclization of unsaturated acetals has been utilized for the synthesis of functionalized chiral piperidines.
Nagorny, Pavel   +3 more
core   +3 more sources

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

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

Home - About - Disclaimer - Privacy