Results 21 to 30 of about 76,241 (267)

The Stereoselective Nitro-Mannich Reaction in the Synthesis of Active Pharmaceutical Ingredients and Other Biologically Active Compounds

open access: yesFrontiers in Chemistry, 2020
The nitro-Mannich (aza-Henry) reaction, in which a nitroalkane and an imine react to form a β-nitroamine, is a versatile tool for target-oriented synthesis. Although the first stereoselective reaction was developed only 20 years ago, and enantioselective
Ana Maria Faisca Phillips   +2 more
doaj   +1 more source

Phenyl piperidine-1-carboxylate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2009
Dans le composé du titre, C(12)H(15)NO(2), l'angle dièdre entre le cycle benzénique et le plan basal du cycle pipéridine (qui est dans une conformation de chaise) est de 49,55 (8)°. Dans le cristal, les mol-écules sont liées par des liaisons hydrogène C-H 0 et des interactions C-H π très faibles.
Durre Shahwar   +4 more
openaire   +3 more sources

Microwave Assisted Synthesis of Py-Im Polyamides [PDF]

open access: yes, 2012
Microwave synthesis was utilized to rapidly build Py-Im polyamides in high yields and purity using Boc-protection chemistry on Kaiser oxime resin. A representative polyamide targeting the 5′-WGWWCW-3′ (W = A or T) subset of the consensus Androgen and ...
Bacsa B.   +38 more
core   +2 more sources

Ammonium piperidine-1-carbodithioate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2011
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..
Ana C. Mafud, Maria T. P. Gambardella
openaire   +3 more sources

Synthesis of hetero-bifunctional, end-capped oligo-EDOT derivatives [PDF]

open access: yes, 2016
Conjugated oligomers of 3,4-ethylenedioxythiophene (EDOT) are attractive materials for tissue engineering applications, and as model systems for studying the properties of the widely used polymer PEDOT.
Armgarth, A   +5 more
core   +4 more sources

Büchwald-Hartwig reaction applied to synthesis of new luminescent liquid crystal triarylamines derived from isoxazoles [PDF]

open access: yes, 2015
© 2015 Taylor & Francis Group, LLC. The present work describes the synthesis and characterization of novel series of triarylamines isoxazoles (TAA) addressed to the organic photovoltaic materials. Diarylisoxazoles were synthesized by sequential [3+2] 1,
Fernandes, T. H. M.   +3 more
core   +2 more sources

Biological evaluation of a series of benzothiazole derivatives as mosquitocidal agents

open access: yesOpen Chemistry, 2019
Aedes aegypti is associated with the transmission of numerous human and animal diseases, such as yellow fever, dengue fever, chikungunya, and more recently Zika virus. Emerging insecticide resistance has created a need to develop new mosquitocidal agents
Sever Belgin   +6 more
doaj   +1 more source

Novel chalcone-based fluorescent human histamine H 3 receptor ligands as pharmacological tools [PDF]

open access: yes, 2012
Novel fluorescent chalcone-based ligands at human histamine H(3) receptors (hH(3)R) have been designed, synthesized, and characterized. Compounds described are non-imidazole analogs of ciproxifan with a tetralone motif.
Tomasch, Miriam   +3 more
core   +1 more source

Use of apomorphine in Parkinsonian patients with neuropsychiatric complications to oral treatment [PDF]

open access: yes, 1997
Neuropsychiatric side effects often complicate anti-Parkinsonian therapy and pose a significant problem in the optimal management of idiopathic Parkinson's disease.
Abbott, R.J.   +6 more
core   +2 more sources

Ammonium Salts of 5-(3-Chromenyl)-5H-chromeno[2,3-b]pyridines

open access: yesMolbank, 2021
The ammonium salts of many drugs have significantly improved the solubility and, accordingly, the bioavailability of medicinal substances in the human body.
Yuliya E. Ryzhkova   +2 more
doaj   +1 more source

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