Results 81 to 90 of about 227,778 (210)

Indium-Catalyzed Annulation of o-Acylanilines with Alkoxyheteroarenes: Synthesis of Heteroaryl[b]quinolines and Subsequent Transformation to Cryptolepine Derivatives

Molecules, 2018
We disclose herein the first synthetic method that is capable of offering heteroaryl[b]quinolines (HA[b]Qs) with structural diversity, which include tricyclic and tetracyclic structures with (benzo)thienyl, (benzo)furanyl, and indolyl rings.
Kyohei Yonekura, Mika Shinoda, Yuko Yonekura, Teruhisa Tsuchimoto   +3 more
doaj   +1 more source

6-Bromo-3-methyl-2-phenyl-3H-imidazo[4,5-b]pyridine [PDF]

, 2011
The two fused five- and six-membered rings building the mol­ecule of the title compound, C13H10BrN3, are approximately planar, the largest deviation from the mean plane being 0.004 (2) Å.
Bolte, Michael, El Ammari, Lahcen, Younes Ouzidan, Ouzidan, Younes, Luis, Santiago V., Michael Bolte, Santiago V. Luis, Essassi, El Mokhtar, El Mokhtar Essassi, Lahcen El Ammari   +9 more
core   +1 more source

Crystal structure of 2,6-bis[(1H-pyrazol-1-yl)methyl]pyridine

Acta Crystallographica Section E, 2014
In the title compound, C13H13N5, the planes of the pyrazolyl groups are nearly perpendicular to that of the central pyridine ring, making dihedral angles of 87.77 (8) and 85.73 (7)°.
Kyung-sun Son, Jeong Oh Woo, Daeyoung Kim, Sung Kwon Kang   +3 more
doaj   +1 more source

Scheme 1, Synthesis of fluorinated chalcones (1–20) and their 2-amino-pyridine-3-carbonitrile (21–40) and 2-amino-4H-pyran-3-carbonitrile (41–60) derivatives.

, 2022
Scheme 1, Synthesis of fluorinated chalcones (1–20) and their 2-amino-pyridine-3-carbonitrile (21–40) and 2-amino-4H-pyran-3-carbonitrile (41–60) derivatives.
M. Mukhlesur Rahman (2100193), Venu Sampath Golla (12884210), Bontha Venkata Subrahmanya Lokesh (12884213), Afzal Basha Shaik (12884216), Srinath Nissankararao (12884204), Rajendra Prasad Yejella (8937146), Surendra Babu Lagu (12884201), Richie R. Bhandare (12884207)   +7 more
core   +1 more source

Crystal structure of 2,5-bis(4-methylpyridin-2-yl)pyrazine chloroform disolvate

Acta Crystallographica Section E, 2014
The heterocyclic molecule in the title solvate, C16H14N4·2CHCl3, possesses inversion symmetry, with the inversion centre situated at the centre of the pyrazine ring. The outer pyridine rings are inclined to the central pyrazine ring by 4.89 (9)°.
Laurette Schmitt, Helen Stoeckli-Evans
doaj   +1 more source

Identification of novel Imidazo[1,2-a]pyridine inhibitors targeting M. tuberculosis QcrB [PDF]

, 2012
Mycobacterium tuberculosis is a major human pathogen and the causative agent for the pulmonary disease, tuberculosis (TB). Current treatment programs to combat TB are under threat due to the emergence of multi-drug and extensively-drug resistant TB ...
Fernández, Raquel, Nicholas J Loman, Besra, Gurdyal S., Ballell, L, Raquel Fernández, Pallen, Mark J., Abrahams, Katherine A, Loman, Nicholas J., Abrahams, Katherine A., Spivey, VL, Constantinidou Chrystala, Mark J Pallen, Remuiñán, Modesto J, Cox, Jonathan A G, Abrahams Katherine A., Loman, Nicholas J, Carlos Alemparte, Lluis Ballell, Cox Jonathan A. G., Loman, NJ, Besra, GS, Constantinidou, Chrystala, Alemparte Carlos, Pallen, Mark J, Besra, Gurdyal S; id_orcid, Abrahams, KA, Remuiñán, Modesto J., Besra Gurdyal S., Remuiñán Modesto J., Vickey L Spivey, Chrystala Constantinidou, Pallen, MJ, Barros, D, Loman Nicholas J., Ballell, Lluis, Fernández, R, Alemparte, Carlos, Cox, Jonathan A. G., Cox, JA, Modesto J Remuiñán, Barros David, Jonathan A G Cox, Gurdyal S Besra, Fernández Raquel, Spivey, Vickey L., David Barros, Constantinidou, C, Ballell Lluis, Spivey Vickey L., Barros, David, Spivey, Vickey L, Pallen Mark J., Remuiñán, MJ, Alemparte, C, Katherine A Abrahams   +54 more
core   +2 more sources

Crystal structures and Hirshfeld surface analyses of 2-[(4,6-diaminopyrimidin-2-yl)sulfanyl]-N-(pyridin-2-yl)acetamide and 2-[(4,6-diaminopyrimidin-2-yl)sulfanyl]-N-(pyrazin-2-yl)acetamide

Acta Crystallographica Section E: Crystallographic Communications, 2018
In the title compounds, C11H12N6OS (I) and C10H11N7OS (II), the diaminopyrimidine ring makes dihedral angles of 71.10 (9)° with the pyridine ring in (I) and 62.93 (15)° with the pyrazine ring in (II).
Manisha Choudhury, Vijayan Viswanathan, Ajay Kumar Timiri, Barij Nayan Sinha, Venkatesan Jayaprakash, Devadasan Velmurugan   +5 more
doaj   +1 more source

Pyridine

, 2013
ROP of R-manOCA: DFT study Protocol:ωB97XD/6-31G(d)/SCRF=(cpcm,solvent=chloroform)  Gaussian09 rev A.02 output ...
Antoine Buchard (453056)
core   +1 more source

2,3,5,6-Tetrafluoro-[N-(3-aminopropyl)-ε-caprolactam]-4-pyridine

Molbank
The title compound was synthesized at a near-quantitative yield using the nucleophilic aromatic substitution of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) with perfluoropyridine (PFP). The purity and structure were determined by NMR (1H, 13C, 19F), GC-EIMS,
Chadron M. Friesen, Nathan J. Weeks, Scott T. Iacono   +2 more
doaj   +1 more source

Butane-1,4-diyl bis-(pyridine-3-carboxylate) [PDF]

, 2012
Mol­ecules of the title compound (alternative name: butane-1,4-diyl dinicotinate), C16H16N2O4, lie on a inversion centre, located at the mid-point of the central C—C bond of the aliphatic chain, giving one half-mol­ecule per asymmetric unit.
Bolte, Michael, Brito, Iván, Michael Bolte, Vallejos, Javier, Cárdenas, Alejandro, Alejandro Cárdenas, Iván Brito, Javier Vallejos   +7 more
core   +1 more source