Results 1 to 10 of about 22,823 (226)

Cycloreversion-enhanced toughness and degradability in mechanophore-embedded end-linked polymer networks [PDF]

Nature Communications
Enhancing the toughness while achieving triggerable degradation in single-network polymer systems without modifying their inherent chemical composition or network architecture remains a significant challenge.
Zhuang Li, Shan Tang
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Kaemphenolide: a cyclobutane-bearing phenylpropanoid from Kaempferia galanga L. with nitric oxide inhibitory activity [PDF]

Natural Products and Bioprospecting
An undescribed phenylpropanoid dimer featuring a rare cyclobutane ring was isolated from the rhizomes of Kaempferia galanga L., a medicinal plant traditionally used in Southeast Asia for its anti-inflammatory and therapeutic properties. Kaemphenolide (1),
Syarifatul Mufidah, Yusaku Miyamae, Hiroyuki Fuchino, Nobuo Kawahara   +3 more
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Essential oil-derived decomposable polymers via cycloaddition polymerization of silyl ether-linked phenylpropanoids [PDF]

Nature Communications
Owing to increasing concerns regarding climate change, research concerning the use of plant biomass as a renewable carbon resource has become increasingly active. Phenylpropanoids, which are aromatic compounds derived from plants, offer renewable sources
Ryo Nagaya, Tatsuya Seko, Kazuhiro Okamoto, Kazuhide Ueno, Mahito Atobe, Naoki Shida   +5 more
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Structural basis of cyclobutane pyrimidine dimer recognition by UV-DDB in the nucleosome [PDF]

Nature Communications
In mammalian global genomic nucleotide excision repair, UV-DDB plays a central role in recognizing DNA lesions, such as 6-4 photoproducts and cyclobutane pyrimidine dimers, within chromatin.
Syota Matsumoto, Yoshimasa Takizawa, Mitsuo Ogasawara, Kana Hashimoto, Lumi Negishi, Wenjie Xu, Haruna Tachibana, Junpei Yamamoto, Shigenori Iwai, Kaoru Sugasawa, Hitoshi Kurumizaka   +10 more
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Synthesis of cyclobutane analogues

Bulletin of the Chemical Society of Ethiopia, 2009
2-(3-Acetyl-2,2-dimethylcyclobutyl)acetic acid (pinonic acid) was synthesized using α-pinene as raw material and potassium permanganate as oxidant. This compound reacted with substituted aniline to produce eight kinds of derivatives with cyclobutane ...
Yan Bai Yin, Zhan Qian Song, Zong De Wang, Shi Bin Shang, Zhao Sheng Cai   +4 more
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Contemporary synthesis of bioactive cyclobutane natural products

Green Synthesis and Catalysis, 2023
Many cyclobutane natural products have intriguing biological properties that arise from their fascinating chemical structures. Cyclobutane natural products feature a cyclobutane scaffold as the core or as a part of the spirocyclic or fused cyclic core ...
Chunngai Hui, Zhuo Wang, Yusheng Xie, Junyang Liu   +3 more
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Antitumor Profile of Carbon-Bridged Steroids (CBS) and Triterpenoids

Marine Drugs, 2021
This review focuses on the rare group of carbon-bridged steroids (CBS) and triterpenoids found in various natural sources such as green, yellow-green, and red algae, marine sponges, soft corals, ascidians, starfish, and other marine invertebrates.
Valery M. Dembitsky, Tatyana A. Gloriozova, Vladimir V. Poroikov   +2 more
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Halogen-bonded co-crystal containing 1,3-diiodoperchlorobenzene and the photoproduct rtct-tetrakis(pyridin-4-yl)cyclobutane resulting in a zigzag topology

Acta Crystallographica Section E: Crystallographic Communications, 2023
The formation and crystal structure of a zigzag network held together by I...N halogen bonds is reported. In particular, the halogen-bond donor is 1,3-diiodoperchlorobenzene (C6I2Cl4) while the acceptor is the photoproduct rtct-tetrakis(pyridin-4-yl ...
Eric Bosch, Daniel K. Unruh, Carlos L. Santana, Ryan H. Groeneman   +3 more
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The Synthesis of Functionalized Dimethylphosphinoyl Cyclopropanes and Cyclobutanes

Журнал органічної та фармацевтичної хімії, 2023
A simple preparative approach to a series of functionalized dimethylphosphinoyl-containing cyclopropanes and cyclobutanes has been developed; it is based on cyclocondensation of dimethylphosphinoyl acetonitrile with 1,2- and 1,3-dibromoalkanes. Synthetic
Anastasiia M. Aleksandrova, Alona S. Cherednichenko, Yuliya V. Rassukana   +2 more
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The synthesis of cis- and trans-3-(4-hydroxyphenyl)cyclobutanecarboxylic acids and the study of their derivatives as GPR-40 receptor ligands

Журнал органічної та фармацевтичної хімії, 2020
Aim. To synthesize cis- and trans-isomers of 3-(4-hydroxyphenyl)cyclobutanecarboxylic acid and evaluate the biological activity of their derivatives against GPR-40. Results and discussion.
I. O. Feskov, I. S. Kondratov, Yu. O. Kuchkovska, V. S. Naumchyk, O. V. Onopchenko, O. O. Grygorenko   +5 more
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