Results 1 to 10 of about 3,576 (132)

Recent advances in the structures and bioactivities of benzopyrans derived from marine fungi: a review [PDF]

Frontiers in Pharmacology
Marine fungi represent a treasure trove of bioactive secondary metabolites, with benzopyran compounds emerging as a significant class of these natural products.
Yidan Xi, Yidan Xi, Huannan Wang, Lixiang Sun, Xueyang Ma, Shuncun Zhang, Zhen Zhang   +6 more
doaj   +2 more sources

Revealing Medicinal Constituents of Bistorta vivipara Based on Non-Targeted Metabolomics and 16S rDNA Gene Sequencing Technology [PDF]

Molecules
Bistorta vivipara is a medicinal plant with a long history, but there are few studies on the effects of its medicinal components and endophytic bacteria on the accumulation of secondary metabolites.
Hui He, Chuyu Tang, Zhengfei Cao, Tao Wang, Min He, Mengjun Xiao, Licheng Xiao, Yuling Li, Xiuzhang Li   +8 more
doaj   +2 more sources

Contrasting Photochromic and Acidochromic Behaviors of Pyridyl- and Pyrimidylethynylated Mono- and Bis-Benzopyrans [PDF]

ACS Omega, 2021
Arindam Mukhopadhyay, Swati Jindal, Vijay Kumar Maka, Jarugu Narasimha Moorthy   +3 more
doaj   +2 more sources

Synthesis of Polycyclic Ether-Benzopyrans and In Vitro Inhibitory Activity against Leishmania tarentolae

Molecules, 2020
Construction of a focused library of polycyclic ether-benzopyrans was undertaken in order to discover new therapeutic compounds that affect Leishmania growth and infectivity.
Sarita Singh, Jacob P. Grabowski, Shilpa Pohani, C. Fiore Apuzzo, David C. Platt, Marjorie A. Jones, T. Andrew Mitchell   +6 more
doaj   +1 more source

Design, Synthesis, and Evaluation of Near-Infrared Fluorescent Molecules Based on 4H-1-Benzopyran Core

Molecules, 2021
A series of novel fluorescent 4H-1-benzopyrans was designed and developed as near-infrared fluorescent molecules with a compact donor–acceptor-donor architecture. Spectral intensity of the fluorescent molecules M-1, M-2, M-3 varied significantly with the
Shuting Wang, Shulei Zhu, Yawen Tanzeng, Yuexing Zhang, Chuchu Li, Mingliang Ma, Wei Lu   +6 more
doaj   +1 more source

Photochromism of indolino-benzopyrans studied by NMR and UV-visible spectroscopy

International Journal of Photoenergy, 2006
The synthesis of photochromic 3,3-di(4′-fluorophenyl)-3H-benzopyrans fused to an indole moiety is described. The structures of photomerocyanines elucidated by NMR spectroscopy and spectrokinetic data (λmax⁡ of colored form, colorability, and rate ...
S. Delbaere, J. Berthet, M. A. Salvador, G. Vermeersch, M. M. Oliveira   +4 more
doaj   +2 more sources

Solid-Phase Parallel Synthesis of Drug-Like Artificial 2<em>H</em>-Benzopyran Libraries

Molecules, 2012
This review covers the construction of drug-like 2<em>H</em>-benzopyrans and related libraries using solid-phase parallel synthesis. In this context, the preparation of substituted benzopyrans such as mono-, di- and trisubstituted benzopyran ...
Young-Dae Gong, Taeho Lee
doaj   +1 more source

Transition-metal-free cross-coupling of indium organometallics with chromene and isochroman acetals mediated by BF3·OEt2 [PDF]

, 2016
[Abstract] A transition-metal-free coupling of triorganoindium reagents with benzopyranyl acetals mediated by a Lewis acid has been developed. The reaction of R3In with chromene and isochroman acetals in the presence of BF3·OEt2 afforded 2-substituted ...
Gil-Negrete, José M., Pérez Sestelo, José, Sarandeses, Luis A.   +2 more
core   +2 more sources

Sustainable synthesis of benzopyran derivatives catalyzed by MgO nanoparticles: Spectral, DFT and TEM analysis

Results in Chemistry, 2023
In current work, a magnesium oxide nanocatalyst was synthesized via greener route using aloe-vera plant leaf extracts as a reducing and stabilizing agent to construct MgO nanoparticle.
Har Lal Singh, Mamta Chahar, Sangeeta, Saloni Sahal, Sarita Khaturia   +4 more
doaj   +1 more source

Kinetic Resolution in Asymmetric Epoxidation using Iminium Salt Catalysis [PDF]

, 2013
The first reported examples of kinetic resolution in epoxidation reactions using iminium salt catalysis are described, providing up to 99% ee in the epoxidation of racemic cis ...
Allin, Steven M., Appleby, Louise F., Buckley, Benjamin R., Bulman Page, Philip C., Chan, Yohan, Day, David P., Mckenzie, Michael J., Slawin, Alexandra M. Z.   +7 more
core   +1 more source