Results 31 to 40 of about 15,307 (218)

Methyl 4-[N-(5-bromopyrimidin-2-yl)carbamoyl]benzoate

Acta Crystallographica Section E, 2012
In the title compound, C13H10BrN3O3, the pyrimidine and benzene rings are twisted with an interplanar angle of 58.4 (1)°. The secondary amide group adopts a cis conformation with an H—N—C—O torsion angle ...
Hui-Ling Hu, Chia-Jun Wu, Chun-Wei Yeh, Jhy-Der Chen   +3 more
doaj   +1 more source

N-Butyl-4-methyl-6-phenylpyrimidin-2-amine

Acta Crystallographica Section E, 2010
In the title compound, C15H19N3, the pyrimidine ring is approximately planar [maximum deviation = 0.007 (1) Å] and forms a dihedral angle of 3.15 (6)° with the benzene ring.
Hoong-Kun Fun, Wan-Sin Loh, Anita Hazra, Shyamaprosad Goswami   +3 more
doaj   +1 more source

Recognition in action: flipping pyrimidine dimers [PDF]

Journal of Molecular Recognition, 2005
DNA bases are normally sheltered within a double helix, but enzymes that modify and repair DNA gain access by flipping individual bases out of the double helix.
openaire   +2 more sources

Methyl 5-(4-hydroxy-3-methoxyphenyl)-2-(4-methoxybenzylidene)-7-methyl-3-oxo-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidine-6-carboxylate

Acta Crystallographica Section E, 2011
In the title compound, C24H22N2O6S, a pyrimidine ring substituted with 4-hydroxy-3-methoxyphenyl is fused with a thiazole ring. The 4-hydroxy-3-methoxyphenyl group is positioned axially to the pyrimidine ring, making a dihedral angle 85.36 (7 ...
H. Nagarajaiah, Noor Shahina Begum
doaj   +1 more source

The Role of Chemistry Across Disciplines From Humanities to Life Sciences in Understanding Complexity and Emergence

Angewandte Chemie International Edition, EarlyView.
This study explores the origins of life by linking prebiotic chemistry, the emergence of information‐carrying molecules such as RNA and proteins, and philosophical questions about consciousness. The study emphasizes the role of molecular evolution in the Central Dogma and provides insights into the chemical origins of biology and the basis of life's ...
Harald Schwalbe, Josef Wachtveitl, Alexander Heckel, Florian Buhr, Sabrina Toews, Thomas M. Schimmer   +5 more
wiley   +1 more source

Structural basis of cyclobutane pyrimidine dimer recognition by UV-DDB in the nucleosome. [PDF]

Nat Commun
Matsumoto S, Takizawa Y, Ogasawara M, Hashimoto K, Negishi L, Xu W, Tachibana H, Yamamoto J, Iwai S, Sugasawa K, Kurumizaka H.   +10 more
europepmc   +3 more sources

Shedding Light on Synthetic Autocatalysis: From Conventional Closed‐Shell Chemistries to Overlooked Open‐Shell Occurrences

Chemistry – A European Journal, EarlyView.
Why add another catalyst when the product itself holds the power to catalyze its own formation? Autocatalysis in synthetic chemistry enhances reaction efficiency and uncovers novel catalytic behavior across both closed‐shell and open‐shell systems, expanding reactivity and enabling innovative design strategies.
Jaspreet Kaur, Joshua P. Barham
wiley   +1 more source

1,3-Bis(4-methylbenzyl)pyrimidine-2,4(1H,3H)-dione

Acta Crystallographica Section E, 2010
In the title molecule, C20H20N2O2, the central pyrimidine ring forms dihedral angles of 71.9 (1) and 69.8 (1)° with the two benzene rings.
Gong-Chun Li, Xiao-Ping Song, Li-Ke Zhang, Jiao-Jiao Cui, Feng-Ling Yang   +4 more
doaj   +1 more source

Nonthermal Food Processing Technologies: A Comprehensive Review

Future Postharvest and Food, EarlyView.
The graphical abstract illustrates the shift from traditional thermal food preservation methods to advanced nonthermal technologies. Traditional methods, represented by heating, often compromise the nutritional and sensory quality of foods. In contrast, nonthermal approaches such as high‐pressure processing (HPP), pulsed electric field (PEF ...
Ashok Kumar Yadav, Dinesh Chandra Rai, Aman Rathaur, Hradesh Rajput, Sudhir Kumar, Zeenat Aman   +5 more
wiley   +1 more source

2-Dicyclohexylamino-3-phenyl-5,6-dihydro-8H-thiopyrano[4′,3′:4,5]thieno[2,3-d]pyrimidin-4(3H)-one

Acta Crystallographica Section E, 2011
In the title compound, C27H33N3OS2, the dihedral angle between the two fused rings of the thieno[3,2-d]pyrimidine system is 3.73 (9)°. The phenyl ring is twisted with respect to the pyrimidine ring [dihedral angle = 71.60 (10)
Xizhen Liang, Yueming Zhou
doaj   +1 more source