Results 31 to 40 of about 14,856 (220)

[3,4-Bis(2,3-dichlorophenyl)cyclobutane-1,2-diyl]bis(furan-2-ylmethanone) monohydrate

IUCrData, 2017
In the title hydrate, C26H16Cl4O4·H2O, the cyclobutane ring carries two 2,3-dichlorophenyl and two furan-2-ylmethanone substituents. It subtends dihedral angles of 86.6 (3) and 37.3 (3)° with the furan rings and 77.0 (5) and 77.0 (3)° with the ...
N. Renuka, S. Naveen, K. R. Raghavendra, A. Dileep Kumar, N. K. Lokanath, K. Ajay Kumar   +5 more
doaj   +1 more source

Methodology-driven efficient synthesis of cytotoxic (±)-piperarborenine B

Green Synthesis and Catalysis, 2022
The evolution of synthetic design toward the efficient synthesis of cyclobutane natural product (±)-piperarborenine B is demonstrated. Taking the advantages of good functional group compatibility of contractive synthesis of cyclobutanes from pyrrolidines,
Chunngai Hui, Andrey P. Antonchick
doaj   +1 more source

UV-Driven Self-Repair of Cyclobutane Pyrimidine Dimers in RNA [PDF]

, 2023
Nucleic acids can be damaged by ultraviolet (UV) irradiation, forming structural photolesions such as cyclobutane-pyrimidine-dimers (CPD). In modern organisms, sophisticated enzymes repair CPD lesions in DNA, but to our knowledge, no RNA-specific enzymes
Corinna, Kufner, Jack , Szostak, Gabriella, Lozano, Dimitar, Sasselov, Sarah, Crucilla, Dian, Ding   +5 more
core   +2 more sources

Enantioselective Organocatalytic Syntheses and Ring‐Expansions of Cyclobutane Derivatives

, 2021
International audienceThe progress in enantioselective organocatalysis have enabled efficient and highly stereoselective syntheses of cyclobutane derivatives, through (2 + 2) annulation reactions, overcoming the geometrical constraints inherent to these ...
Amatore, Muriel, Coquerel, Yoann, Barday, Manuel, Constantieux, Thierry, Manuel Barday, Thierry Constantieux, Jean Rodriguez, Bouillac, Pierre, Muriel Amatore, Rodriguez, Jean, Yoann Coquerel, Pierre Bouillac   +11 more
core   +1 more source

Studies on the Synthesis and Reactivity of Novel Benzofuran-2-yl-[3-Methyl-3-Phenylcyclobutyl] Methanones and their Antimicrobial Activity

Molecules, 2005
Preparation in excellent yields of cyclobutyl benzofuran-2-yl- and naphthofuran- 2-yl-ketones, the corresponding ketoximes and thiosemicarbazones, ether derivatives of the ketoximes and thiazoles derived from the thiosemicarbazones are described.
Cavit Kazaz, Alaaddin Çukurovali, Misir Ahmedzade, Murat Koca   +3 more
doaj   +1 more source

The head-to-head photodimer of indenoindene

IUCrData, 2020
Irradiation of 1-(1-benzocyclobutenylidene)benzocyclobutene gives indenoindene and its head-to-head photodimer nonacyclo[9.7.7.72,10.01,11.02,10.03,8.012,17.019,24.026,31]dotriaconta-3,5,7,12,14,16,19,21,23,26,28,30-dodecaene, C32H24.
Heiner Detert, Nina Jacobs, Dieter Schollmeyer   +2 more
doaj   +1 more source

Regulation of nucleotide excision repair by UV-DDB: prioritization of damage recognition to internucleosomal DNA [PDF]

, 2011
How tightly packed chromatin is thoroughly inspected for DNA damage is one of the fundamental unanswered questions in biology. In particular, the effective excision of carcinogenic lesions caused by the ultraviolet (UV) radiation of sunlight depends on ...
Naegeli, H, Nina Kaczmarek, Andreas Glas, Glas, Andreas, Carell Thomas, Glas, A, Carell, Thomas, Fei Jia, Kaczmarek Nina, Glas Andreas, Jia Fei, Carell, T, Andreas Luch, Naegeli Hanspeter, Fei, Jia, Naegeli, Hanspeter, Luch Andreas, Kaczmarek, Nina, Thomas Carell, Hanspeter Naegeli, Luch, A, Luch, Andreas, Fei, J, Kaczmarek, N, Luch, A., Fei, J., Carell, T., Kaczmarek, N., Glas, A., Naegeli, H.   +29 more
core   +2 more sources

Crystal structure of r-1,c-2-dibenzoyl-t-3,t-4-bis(2-nitrophenyl)cyclobutane

Acta Crystallographica Section E: Crystallographic Communications, 2017
The condensation reaction of acetophenone (1-phenylethan-1-one) with 2-nitrobenzaldehyde in the molten state yielded the expected chalcone, (E)-3-(2-nitrophenyl)-1-phenylprop-2-en-1-one, and, unexpectedly, the title compound, C30H22N2O6, which results ...
Manuel Velasco Ximello, Sylvain Bernès, Aarón Pérez-Benítez, Ulises Hernández Pareja, Angel Mendoza, Jorge R. Juárez Posadas, Jaime Vázquez Bravo   +6 more
doaj   +1 more source

Ball-and-stick models of the cyclobutane molecule

, 2022
   Cyclobutane is a cycloalkane and organic compound. Cyclobutane is a colourless gas and commercially available as a liquefied gas. Derivatives of cyclobutane are called cyclobutanes. Cyclobutane itself is of no commercial significance.
Junjie Chen (13997541)
core   +1 more source

2α-Acetoxy-5α-methoxycaryophyll-8(15)-en-3-one

Acta Crystallographica Section E, 2009
The title compound, C18H28O4, crystallizes with two molecules in the asymmetric unit. Both molecules have similar conformations of nine-membered rings, which are trans-fused with cyclobutane fragments.
Wen Zhang, Hong-Quan Duan
doaj   +1 more source