Results 41 to 50 of about 3,131,133 (230)

3-(2-Amino-1-methyl-4-oxo-4,5-dihydro-1H-imidazol-5-yl)-3-hydroxy-1-phenylindolin-2-one ethanol solvate

Acta Crystallographica Section E, 2009
In the title compound, C18H16N4O3·C2H5OH, molecules are linked into chains by a series of intermolecular N—H...O, N—H...N and O—H...O hydrogen bonds which stabilize the crystal structure.
Narsimha Reddy Penthala, Thirupathi Reddy Yerram Reddy, Sean Parkin, Peter A. Crooks   +3 more
doaj   +1 more source

Racemic compound and conglomerate of anhydrous sibutramine hydrochloride: a rare case of relative stability

, 2016
The thermal behaviours of racemic sibutramine hydrochloride monohydrate as well as that of the anhydrous state were investigated by DSC. A new anhydrous solid was then put in evidence and its crystal structure was solved from XRPD data.
F. Rosa, P. Négrier, P. Espeau
semanticscholar   +1 more source

Synthesis of Optically Active Bifunctional Building Blocks through Enantioselective Copper-Catalyzed Allylic Alkylation Using Grignard Reagents [PDF]

, 2007
Enantioselective copper-catalyzed allylic alkylations were performed on allylic bromides with a protected hydroxyl or amine functional group using several Grignard reagents and Taniaphos L1 as a ligand.
Feringa, Ben L.,, López, Fernando,, Minnaard, Adriaan J.,, Zijl, Anthoni W. van,   +3 more
core   +1 more source

Non-Linear Effects in Asymmetric Reactions: Negative and Positive Stereoselectivity in the Formation of Homoleptic 1:2 Metal to Ligand Complexes of Chiral 1,9-Disubstituted Semicorrin Ligands

CHIMIA, 2003
The stereoselectivity of the formation of bis-chelates with the 1,9-disubstituted chiral semicorrin ligands (1S,9S)-dimethyl 5-cyanosemicorrin-1,9-dicarboxylate (1) for Co2+, Ni2+, Cu2+, and Pd2+ and with its (1S,9S)-diethyl analogue 2 for Co2+
Nathalie Guicher, Helen Stoeckli-Evans, Klaus Bernauer   +2 more
doaj   +1 more source

(±)-Gossypol induces apoptosis and autophagy in head and neck carcinoma cell lines and inhibits the growth of transplanted salivary gland cancer cells in BALB/c mice [PDF]

, 2016
Racemic Gossypol [(±)-GOS], composed of both (-)-GOS and (+)-GOS, is a small BH3-mimetic polyphenol derived from cotton seeds. (±)-GOS has been employed and well tolerated by cancer patients. Head and neck carcinoma (HNC) represents one of the most fatal
Andracchio, Orlando, Bei, Roberto, Benvenuto, Monica, Giganti, Maria Gabriella, Godos, Justyna, Lido, Paolo, Masuelli, Laura, Mattera, Rosanna, Modesti, Andrea, Taffera, Gloria, Tresoldi, Ilaria   +10 more
core   +1 more source

(3aR*,7aS*)-1-(p-Tolylsulfonyl)perhydroindol-2-one

Acta Crystallographica Section E, 2010
In the racemic title compound, C15H19NO3S, the dihedral angle between the planes of the benzene ring and the O=S=O group is 56.92 (7)° and the cyclohexane ring adopts a chair conformation.
Lei Fang, Xu-Bin Fang, Lei Chen
doaj   +1 more source

Synthesis and crystal structure of (±)-Goniotamirenone C

Acta Crystallographica Section E: Crystallographic Communications, 2020
The structure of the racemic version of the natural product Goniotamirenone C [racemic anti-6-(2-chloro-1-hydroxy-2-phenylethyl)-2H-pyran-2-one, C13H11ClO3] at 150 K is reported. The compound crystallizes with monoclinic (P21/n) symmetry and with Z′ = 2.
Pornphimol Meesakul, Christopher Richardson, Surat Laphookhieo, Stephen G. Pyne   +3 more
doaj   +1 more source

Phase Diagrams For The Blue Phases Of Highly Chiral Liquid Crystals [PDF]

, 1993
Polarizing microscopy and optical-activity measurements are used to determine the phase diagram for the blue phases of chiral-racemic mixtures of terephthaloyloxy-bis-4-(2\u27-methylbutyl) benzoate.
Booth, C. J., Bowling, M. B., Collings, Peter J., Goodby, J. W.   +3 more
core   +2 more sources

3,3,6-Tribromo-1-methyl-1H-2,1-benzothiazin-4(3H)-one 2,2-dioxide

Acta Crystallographica Section E, 2010
In the title compound, C9H6Br3NO3S, a halogenated benzothiazine derivative, the thiazine ring adopts a sofa conformation. The crystal studied was a racemic twin with a contribution of 72 (1)% of the major domain.
Ghulam Mustafa, Muhammad Nadeem Arshad, Islam Ullah Khan, Muhammad Shafiq   +3 more
doaj   +1 more source

Expected and Unexpected Products in Half Curcuminoid Synthesis: Crystal Structures of But-3-en-2-ones and 3-Methylcyclohex-2-enones

Crystals, 2021
The expected (E)-but-3-en-2-ones compounds I and II (half curcuminoids) were obtained by the Claisen–Schmidt reaction between aldehydes 3,4-dimethoxybenzaldehyde or 4-nitrobenzaldehyde with acetone.
Marco A. Obregón-Mendoza, Imilla I. Arias-Olguín, William Meza-Morales, Yair Alvarez-Ricardo, María Isabel Chávez, Rubén A. Toscano, Julia Cassani, Raúl G. Enríquez   +7 more
doaj   +1 more source