Results 1 to 10 of about 3,825 (162)

Chromones as Photocatalyzed HAT Reagent and Michael Acceptor for Direct C–H Alkylation of 2-Substituted 4-Chromanones [PDF]

Research
4-Chromanone is a biologically important heterocyclic scaffold found in natural products and pharmaceuticals. Traditional syntheses of 2-substituted 4-chromanones often rely on high-temperature peroxide initiation, transition-metal catalysis, or complex ...
Ya Xiao, Junrong Zhang, Wujun Jian, Ya Zhou, Xiang Zhou, W. M. W. W. Kandegama, Song Yang   +6 more
doaj   +2 more sources

2-(2-Phenylethyl)chromones increase in Aquilaria sinensis with the formation of agarwood [PDF]

Frontiers in Plant Science
Obtained from Aquilaria Lam. and Gyrinops Gaertn., agarwood is a prestigious perfume and medicinal material in the world. Its primary chemical constituents and indicators of agarwood's development are 2-(2-phenylethyl)chromones (PECs).
Yuanyuan Sun, Yuanyuan Sun, Meiran Wang, Meng Yu, Jian Feng, Jianhe Wei, Jianhe Wei, Yangyang Liu, Yangyang Liu   +8 more
doaj   +2 more sources

Comparison of the Blood–Brain Barrier Penetration Ability and Anti-Neuroinflammatory Activity of Chromones in Two Types of Agarwood [PDF]

Pharmaceuticals
Background/Objectives: Agarwood has a good neuroprotective effect and is often used to relieve anxiety and treat insomnia. This study compared the similarities and differences in the chromone components of two types of agarwood.
Mengyuan Yang, Yanan Yuan, Jingfan Wei, Yifei Pei, Yuanfei Niu, Yifan Zhao, Xiangying Kong, Zhijie Zhang   +7 more
doaj   +2 more sources

Catalyst-Free Three-Component Synthesis of 3-Aminoalkyl Chromones Using Rongalite as a C1 Synthon [PDF]

Molecules
Herein, a facile and efficient strategy for one-pot synthesis of 3-aminoalkyl chromones from o-hydroxyaryl enaminones and aromatic amines using inexpensive rongalite as a C1 source has been developed.
Juanjuan Gao, Xinlei Fu, Ruoying Hu, Jinhua Wan, Kai Yang, Zhaowen Liu, Zhiqin Huang   +6 more
doaj   +2 more sources

Dynamic Environmental Interactions Shape the Volatile Compounds of Agarwood Oils Extracted from Aquilaria sinensis Using Supercritical Carbon Dioxide [PDF]

Molecules
Aquilaria spp. are a highly valuable plant species found in the Chinese herbal medicine and agarwood fragrance supplement industries for fumigation, combustion and perfume.
Wenxian Zhang, Sizhu Qian, Dehuai Wu, Qiaoling Yan, Jen-Ping Chung, Yongmei Jiang   +5 more
doaj   +2 more sources

Aromatic components and endophytic fungi during the formation of agarwood in Aquilaria sinensis were induced by exogenous substances [PDF]

Frontiers in Microbiology
The process of formation of aromatic components for agarwood in Aquilaria sinensis is closely related to endophytic fungi and the result of complex multiple long-term joint interactions with them. However, the interactions between the aromatic components
Shengjiang Pang, Shengjiang Pang, Shengjiang Pang, Weiwei Zhao, Qingqing Zhang, Zuwei Tian, Dan Wu, Shuokun Deng, Pei Zhang, Zhongguo Li, Shiling Liu, Baoguo Yang, Guihua Huang, Zaizhi Zhou   +13 more
doaj   +2 more sources

Rhodaelectro-catalyzed access to chromones via formyl C–H activation towards peptide electro-labeling

Nature Communications, 2021
The chromone scaffold is present in drugs and bioactive natural products, but conventional approaches to access chromones require stoichiometric amounts of oxidants. Here, the authors report rhodaelectro-catalyzed assembly of chromones by electrochemical
Maximilian Stangier, Antonis M. Messinis, João C. A. Oliveira, Hao Yu, Lutz Ackermann   +4 more
doaj   +1 more source

Structure-Based Design of Novel MAO-B Inhibitors: A Review

Molecules, 2023
With the significant growth of patients suffering from neurodegenerative diseases (NDs), novel classes of compounds targeting monoamine oxidase type B (MAO-B) are promptly emerging as distinguished structures for the treatment of the latter.
Emilio Mateev, Maya Georgieva, Alexandrina Mateeva, Alexander Zlatkov, Shaban Ahmad, Khalid Raza, Vasco Azevedo, Debmalya Barh   +7 more
doaj   +1 more source

An Expeditious Approach towards the Synthesis and Application of Water-Soluble and Photostable Fluorogenic Chromones for DNA Detection

Molecules, 2022
The intensive research for hybridization probes based on organic molecules with fluorogenic properties is currently attracting particular attention due to their potential to efficiently recognize different DNA conformations and the local environment ...
Steve Vincent, Suman Mallick, Guillaume Barnoin, Hoang-Ngoan Le, Benoît Y. Michel, Alain Burger   +5 more
doaj   +1 more source

Photochemical Transformations of Chromones [PDF]

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Satish C. Gupta, Ramesh C. Kamboj
openaire   +1 more source