Results 11 to 20 of about 92,958 (217)

Alkali-metal-mediated zincation (AMMZn) meets N-heterocyclic carbene (NHC) chemistry : Zn–H exchange reactions and structural authentication of a dinuclear Au(I) complex with a NHC anion [PDF]

, 2013
Merging two evolving areas in synthesis, namely cooperative bimetallics and N-heterocyclic carbenes (NHCs), this study reports the isolation of the first intermediates of alkali-metal-mediated zincation (AMMZn) of a free NHC and a Zn–NHC complex using ...
Aldeco-Perez, Andrikopoulos, Arduengo, III, Arduengo, III, Armstrong, Armstrong, Armstrong, Armstrong, Arnold, Arnold, Arnold, Back, Baillie, Bantu, Bourissou, Clegg, Clegg, Clegg, Conway, Crabtree, de Frémont, Diez-Gonzalez, Flower, Furuyama, Ghadwal, Gomez-Suarez, Guisado-Barrios, Haag, Hashmi, Hashmi, Hashmi, Hashmi, Hashmi, Hashmi, Jimenez-Nunez, Kobayashi, Kronig, Linton, Masuda, Mendoza-Espinosa, Mulvey, Mulvey, Mulvey, Mulvey, Musgrave, Nobuto, Raubnheimer, Rudolph, Rudolph, Schuster, Uchiyama, Wang, Wang, Wang, Wang, Westerhausen   +55 more
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Synthesis of New Heterocyclic compounds derived from Pyrazoline-5-one compound

Al-Mustansiriyah Journal of Pharmaceutical Sciences, 2011
In this work new heterocyclic pyrazolin derivatives have been synthesized from diazonium chloride salt of 4-aminobenzoic acid: firstly, Azo compounds were prepared from the reaction of an ethanolic solution of sodium acetate and calculated amount of ...
Rafah F. Al-Smaisim, Redha E. Al-Bayati, Abdul Hussain K. Sharba   +2 more
doaj   +1 more source

Designed Azolopyridinium Salts Block Protective Antigen Pores In Vitro and Protect Cells from Anthrax Toxin [PDF]

, 2013
Background:Several intracellular acting bacterial protein toxins of the AB-type, which are known to enter cells by endocytosis, are shown to produce channels.
A Kronhardt, A Messmer, A Ménard, A Ménard, AA Verveen, AF Kintzer, AM Friedlander, Anika Bronnhuber, AW Artenstein, BA Krantz, C Andersen, C Bachmeyer, C Bachmeyer, C Petosa, Christoph Beitzinger, CT Bahner, D Blöcker, D Blöcker, DB Lacy, EM Nestorovich, EM Nestorovich, F Conti, F Orlik, F Orlik, F Tonello, F Tonello, F Wohnsland, G Hajós, G Timári, G Vitale, György Hajós, H Barth, H Barth, Holger Barth, I Zornetta, J Sun, J Wesche, JA Young, JC Milne, JL Elliott, K Cunningham, KA Bradley, Kerstin Duscha, L Abrami, L Abrami, L Abrami, L Abrami, L Song, Ludger Johannes, M Eigen, M Mock, Markus Huber-Lang, MJ Brown, NS Duesbery, PC Hanna, R Benz, R Benz, R Palkó, R Pellizzari, RJ Collier, RO Blaustein, RO Blaustein, Roland Benz, S Nekolla, SH Leppla, SM Bezrukov, SM Bezrukov, T Neumeyer, T Neumeyer, T Neumeyer, TC Dixon, V Escuyer, VA Karginov, VA Karginov, VA Karginov, Y Singh, Zsuzsanna Riedl   +76 more
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Synthesis and studies molecular docking of some new thioxobenzo[g]pteridine derivatives and 1,4-dihydroquinoxaline derivatives with glycosidic moiety

Journal of Taibah University for Science, 2018
The present work is mainly dedicated to heterocyclic compounds as well as S-glycoside. 1,4-dihydroquinoxaline derivatives 3 were obtained from the reaction 2 with carbon disulfide in presence of potassium hydroxide.
Amira A. Ghoneim, Nadia Ali Ahmed Elkanzi, Rania B. Bakr   +2 more
doaj   +1 more source

Tandem ring-closing metathesis reaction with a ruthenium catalyst containing a N-heterocyclic ligand [PDF]

, 2001
The highly active catalyst 2 was used in tandem RCM to make molecules with various ring systems containing α,β-unsaturated carbonyl ...
Choi, Tae-Lim, Grubbs, Robert H.
core   +1 more source

X-ray Structures of 3-Acetyloxazolidin-2-one, 3-Acetyloxazolin-2-one and Oxazolin-2(3H)-one

Molbank, 2022
The X-ray structures of three simple heterocyclic compounds have been obtained for the first time. Structures of both 3-acetyloxazolidin-2-one 1 and its unsaturated analogue 3-acetyloxazolin-2-one 3 show a planar imide nitrogen with the exocyclic C=O ...
R. Alan Aitken, Joe S. Logan, Alexandra M. Z. Slawin   +2 more
doaj   +1 more source

Cycloadditions of cyclohexynes and cyclopentyne. [PDF]

, 2014
We report the strategic use of cyclohexyne and the more elusive intermediate, cyclopentyne, as a tool for the synthesis of new heterocyclic compounds. Experimental and computational studies of a 3-substituted cyclohexyne are also described.
Garg, Neil K, Houk, KN, Jiménez-Osés, Gonzalo, McMahon, Travis C, Medina, Jose M   +4 more
core   +2 more sources

Antinociceptive grayanane-derived diterpenoids from flowers of Rhododendron molle

Acta Pharmaceutica Sinica B, 2020
Twelve new grayanoids (1−12) along with five known compounds were isolated from flowers of Rhododendron molle. Their structures were fully characterized using a combination of spectroscopic analyses, computational calculations, and single crystal X-ray ...
Yong Li, Yuxun Zhu, Zhaoxin Zhang, Li Li, Yunbao Liu, Jing Qu, Shuanggang Ma, Shishan Yu   +7 more
doaj   +1 more source

Photochemistry of N-(selenoalkyl)-phthalimides. Formation of N, Se-heterocyclic systems [PDF]

, 2015
A variety of N-(selenomethyl)alkyl-phthalimides (alkyl = -(CH2)n-; n = 2-5, 1a, b, d, e) and N-(selenobenzyl)propyl phthalimide (1c) were synthesized and their photochemistry was studied at λ = 300 nm.
Argüello, Juan Elias, Heredia, Adrián Alberto, Oksdath Mansilla, Gabriela, Peñeñory, Alicia Beatriz   +3 more
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Synthesis of New Pyrazoline - Phenoxathiin Derivatives

مجلة بغداد للعلوم, 2013
Phenoxathiin was prepared by the reaction of diphenyl ether with sulfur in the presence of anhydrous aluminum chloride. This work comprised the synthesis of new phenoxathiin derivatives containing heterocyclic moieties.
Baghdad Science Journal
doaj   +1 more source