Results 11 to 20 of about 2,756 (214)

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

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   +3 more sources

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

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.
Huannan Wang
exaly   +3 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

Synthesis of 2-Prenylated Alkoxylated Benzopyrans by Horner-Wadsworth-Emmons Olefination with PPARα/γ Agonist Activity. [PDF]

ACS Med Chem Lett, 2021
International audienceWe have synthesized series of 2-prenylated benzopyrans as analogs of the natural polycerasoidol, a dual PPARα/γ agonist with anti-inflammatory effect.
García A, Vila L, Marín P, Bernabeu Á, Villarroel-Vicente C, Hennuyer N, Staels B, Franck X, Figadère B, Cabedo N, Cortes D.   +10 more
europepmc   +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

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

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

Alkaloid and benzopyran compounds of Melicope latifolia fruit exhibit anti-hepatitis C virus activities

BMC Complementary Medicine and Therapies, 2021
Background New agents for developing alternative or complementary medicine to treat the hepatitis C virus (HCV) are still needed due to high rates of HCV infection globally and the current limitations of available treatments.
Aty Widyawaruyanti, Mulyadi Tanjung, Adita Ayu Permanasari, Ratih Saputri, Lidya Tumewu, Myrna Adianti, Chie Aoki-Utsubo, Hak Hotta, Achmad Fuad Hafid, Tutik Sri Wahyuni   +9 more
doaj   +1 more source

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

Synthesis of 2H-1-Benzopyrans via Palladacycles with a Metal-Bonded Stereogenic Carbon

, 2016
Stable oxapalladacycles have been prepared and converted into a series of highly functionalized 2H-1-benzopyrans via regioselective insertion of activated ...
Janelle L. Portscheller (2691865), Helena C. Malinakova (1915663)   +1 more
core   +3 more sources