A Stacked Pyrazolo [3, 4-D] Pyrimidine-Based Flexible Molecule: the Effect on Stacking of An Ethyl Group In Comparison With a Methyl Group (original) (raw)

… Section C: Crystal …, 2002

A stacked pyrazolo[3,4-d]pyrimidine-based flexible molecule: the effect on stacking of an ethyl group in comparison with a methyl group

Acta Crystallographica Section C-crystal Structure Communications, 2001

A stacked pyrazolo[3,4-d]pyrimidine-based flexible molecule: the effect on stacking of a bulky isopropyl group in comparison with a methyl/ethyl group

Acta Crystallographica Section C-crystal Structure Communications, 2003

A Stacked Pyrazolo[3,4-d]pyrimidine-Based Flexible Molecule

Acta Crystallographica Section C-crystal Structure Communications, 1998

Disappearance of Intramolecular Stacking Due to One-Atom Movement or Increment of Apropylene Linker'In Pyrazolo [3, 4-D] Pyrimidine-Based Flexible Models

Professor Diwan S. Rawat, Kamlakar Avasthi

… Section C: Crystal …, 2000

Unusual Effect of Bulky Isopropyl Group on Robustness of the U-Motif In Pyrazolo [3, 4-D] Pyrimidine Core Based [] Leonard Linker'Compounds In Comparison to Methyl/ …

Journal of Molecular …, 2008

Studies on arene interactions in flexible pyrazolo[3,4-d]pyrimidine core based symmetrical 'propylene/Leonard liner' models: X-ray crystallographic evidence for disappearance of intramolecular stacking due to presence of chloro- or cyano-groups in place of methylsulfanyl or alkoxy substituents

Journal of Molecular Structure, 2009

Studies on arene interactions in flexible pyrazolo [3, 4-d] pyrimidine core based symmetrical [] propylene/Leonard linker'models: X-ray crystallographic evidence for …

Journal of Molecular …, 2009

Isomeric pyrazolo[3,4- d ]pyrimidine-based molecules: disappearance of dimerization due to interchanged substitutions

Acta Crystallographica Section C Crystal Structure Communications, 2002

A Dimeric Layered Structure of a 4-Oxo-4, 5-Dihydro-1H-Pyrazolo [3, 4-D] Pyrimidine Compound

… Section C: Crystal …, 2002

Unusual reverse face-to-face stacking in propylene linked pyrazole system: perspective of organic materials

Sunil Rai, Maria Puerta, Pedro Valerga

Fine Tuning of Folded Conformation by Change of Substituents: 1H NMR and Crystallographic Evidence for Folded Conformation Due to Arene Interactions In Pyrazolo [3, 4 …

Journal of Molecular …, 2005

Design and Synthesis of Pyrazolo [3, 4-D] Pyrimidine Core Based Dissymmetrical [] Leonard Linker'Compounds: 1H NMR and Crystallographic Evidence for Folded …

Journal of Molecular …, 2006

Unusual molecular conformation in dissymmetric propylene-linker compounds containing pyrazolo[3,4-d]pyrimidine and phthalimide moieties

Umesh Yadava

Acta Crystallographica Section C Crystal Structure Communications, 2003

Fine tuning of folded conformation by change of substituents: 1H NMR and crystallographic evidence for folded conformation due to arene interactions in pyrazolo[3,4-d]pyrimidine core based ‘propylene linker’ compounds

Journal of Molecular Structure, 2005

Hydrogen-bonded chains in isostructural 5-methyl-2-(4-methylphenyl)-7,8-dihydro-6H-cyclopenta[g]pyrazolo[1,5-a]pyrimidine, 2-(4-chlorophenyl)-5-methyl-7,8-dihydro-6H-cyclopenta[g]pyrazolo[1,5-a]pyrimidine and 2-(4-bromophenyl)-5-methyl-7,8-dihydro-6H-cyclopenta[g]pyrazolo[1,5-a]pyrimidine, and sh...

Jairo Quiroga

Acta crystallographica. Section C, Crystal structure communications, 2005

2,5-Bis(4-methylphenyl)-7-phenyl-6,7-dihydropyrazolo[1,5-a]pyrimidine-3,6-dicarbaldehyde: hydrogen-bonded sheets built from N—H...O and C—H...O hydrogen bonds

John Low

Acta Crystallographica Section E Structure Reports Online, 2006

Molecular structure of pyrazolo[1,5- a]pyrimidines: X-ray diffractometry and theoretical study

Dayse Moreira

Journal of Molecular Structure, 2009

pyrazolo(1,5-a)pyrimidine: a three- dimensional framework structure built from two N—HN hydrogen bonds

Jairo Quiroga

Synthesis of Diphenyl Pyridazinone-based flexible system for conformational studies through weak noncovalent interactions: Application in DNA binding

ranjeet kumar

Gas-phase conformational and intramolecular π–π interaction studies on some pyrazolo[3,4-d]pyrimidine derivatives

Umesh Yadava

Computational and Theoretical Chemistry, 2011

1H NMR and X-Ray Crystallographic Analysis of 1, 2-Bis (4, 6-Diethylthio-1H-Pyrazolo [3, 4-D] Pyrimidin-1-Yl) Ethane and Its [] Propylene Linker'-Analog: Molecular …

Tetrahedron Letters, 2001

Design and synthesis of pyrazolo[3,4-d]pyrimidine core based dissymmetrical `Leonard linker' compounds: 1H NMR and crystallographic evidence for folded conformation due to arene interactions

J Mol Struct, 2006

6-(2-Hydroxybenzoyl)-2-(4-methylphenyl)-5-methyl-7-phenylpyrazolo[1,5-a]pyrimidine: complex sheets built from C—H...N and C—H...O hydrogen bonds

Jaime Portilla

Acta Crystallographica Section E Structure Reports Online, 2006

Design and Synthesis of Pyrazolo [3, 4-D] Pyrimidine and Triazolo [4, 5-D] Pyrimidine Based Dissymmetrical [] Leonard Linker'Compounds: 1H NMR and Crystallographic …

Journal of Molecular …, 2007

An appraisal on synthetic and pharmaceutical perspectives of pyrazolo[4,3-d]pyrimidine scaffold

Nisar Sayyad

Bioorganic & Medicinal Chemistry, 2018

Design and synthesis of pyrazolo[3,4-d]pyrimidine and triazolo[4,5-d]pyrimidine based dissymmetrical ‘Leonard linker’ compounds: 1H NMR and crystallographic evidence for folded conformation due to arene interactions

Journal of Molecular Structure, 2007

An unusual conformational change in the folded trimethylene/leonard linker pyrazolo[3,4-d]pyrimidine analogue of the theophylline compound due to structural changes

Journal of Structural Chemistry, 2015

1H NMR and X-ray crystallographic analysis of 1,2-bis(4,6-diethylthio-1 H-pyrazolo[3,4- d]pyrimidin-1-yl)ethane and its ‘propylene linker’-analog: molecular recognition versus crystal engineering

Tetrahedron Lett, 2001