ChemInform Abstract: Highly Diastereoselective Bis-hydroxylation of the Aminodeoxy- Conduritol C Ring System. A Formal Synthesis of the Aminocyclitol Moiety of the Antibiotic Hygromycin A.

ChemInform ◽  
2010 ◽  
Vol 26 (26) ◽  
pp. no-no
Author(s):  
O. ARJONA ◽  
A. DE DIOS ◽  
J. PLUMET ◽  
B. SAEZ
Keyword(s):  
Ring System ◽  
Formal Synthesis ◽  
System A

A Reductive-Heck Approach to the Hydroazulene Ring System: A Formal Synthesis of the Englerins

2012 ◽  
Vol 14 (13) ◽  
pp. 3340-3343 ◽  
Author(s):  
Peng Gao ◽  
Silas P. Cook
Keyword(s):  
Ring System ◽  
Formal Synthesis ◽  
System A

Access to the Naproxen Ring System, a Crowded β‐Lactam, through In Situ Generated Ketenes: Synthesis, Molecular Docking, and Evaluation of Anticonvulsant Activity

2020 ◽  
Vol 5 (44) ◽  
pp. 14190-14197
Author(s):  
Somayeh Salarinejad ◽  
Mohammad Reza Islami ◽  
Mehdi Abbasnejad ◽  
Fatemeh Zigheimat ◽  
Razieh Kooshki ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Anticonvulsant Activity ◽  
Ring System ◽  
System A

scholarly journals EQUILIBRIUM CURRENTS IN A QUANTUM DOUBLE RING SYSTEM: A NON-TRIVIAL ROLE OF SYSTEM-RESERVOIR COUPLING

2004 ◽  
Vol 18 (25) ◽  
pp. 3343-3353 ◽  
Author(s):  
COLIN BENJAMIN ◽  
A. M. JAYANNAVAR
Keyword(s):  
Magnetic Field ◽  
Magnetic Moment ◽  
Coupling Parameter ◽  
Ring System ◽  
Complete Agreement ◽  
Quantum Double ◽  
Double Ring ◽  
System A ◽  
S Matrix

Amperes law states that the magnetic moment of a ring is given by current times the area enclosed. Also from equilibrium statistical mechanics, it is known that magnetic moment is the derivative of free energy with respect to magnetic field. In this work, we analyze a quantum double ring system interacting with a reservoir. A simple S-Matrix model is used for system-reservoir coupling. We see complete agreement between the aforesaid two definitions when coupling between system and reservoir is weak, increasing the strength of coupling parameter, however, leads to disagreement between the two, thereby signifying the important role played by the coupling parameter in mesoscopic systems.

scholarly journals Crystal structure and computational studies of (3Z)-4-benzoyl-3-[(2,4-dinitrophenyl)hydrazinylidene]-5-phenylfuran-2(3H)-one

2016 ◽  
Vol 72 (12) ◽  
pp. 1852-1855
Author(s):  
Yavuz Köysal ◽  
Hakan Bülbül ◽  
İlhan Özer İlhan ◽  
Nazenin Akın ◽  
Necmi Dege
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Crystal Packing ◽  
Theoretical Calculations ◽  
Ring System ◽  
Computational Studies ◽  
System A ◽  
Compound C ◽  
Phenyl Rings ◽  
Π Stacking Interaction

In the molecular structure of the title compound, C23H14N4O7, the furan, dinitrophenyl and phenyl rings are almost in the same plane (r.m.s. deviation = 0.127 Å), with the benzoyl ring inclined by a dihedral angle of 56.4 (1)° to the three-ring system. A bifurcated intramolecular N—H...(O,O) hydrogen bond is present. In the crystal, adjacent molecules are linked by C—H...O hydrogen bonds into chains parallel to [001]. A π–π stacking interaction between the benzoyl and dinitrophenyl moieties contributes to the crystal packing. Theoretical calculations using DFT(B3YLP) methods were used to confirm the molecular structure.

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