Results 11 to 20 of about 3,645 (198)

Synthetic Anthocyanidins from Natural Benzopyrans [PDF]

open access: yesNatural Product Communications, 2016
A hydride abstraction strategy can be used to make anthocyanidins and isoflavylium salts from benzopyrans in good ...
Geraskin, Ivan   +2 more
core   +7 more sources

Synthesis of benzofurans and benzopyrans [PDF]

open access: yes, 2002
Syntheses of 2,3-dihydrobenzofurans and 3,4-dihydrobenzopyrans normally involve several stages, therefore efficient syntheses of these compounds are desirable. A number of 3,4-dihydrobenzopyrans derivatives were prepared in one pot syntheses.
Mahmood, Raza
core   +3 more sources

Mechanism and Application of Baker–Venkataraman O→C Acyl Migration Reactions [PDF]

open access: yes, 2014
This literature review focuses on the O→C acyl migration of aryl esters to yield the corresponding 1,3-dicarbonyl products—a reaction known as the Baker–Venkataraman rearrangement—and outlines their subsequent transformations.
Ameen, Dana, Snape, Timothy James
core   +1 more source

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

open access: yesBMC 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   +9 more
doaj   +1 more source

An overview of structure-based activity outcomes of pyran derivatives against Alzheimer’s disease

open access: yesSaudi Pharmaceutical Journal, 2023
Pyran is a heterocyclic group containing oxygen that possesses a variety of pharmacological effects. Pyran is also one of the most prevalent structural subunits in natural products, such as xanthones, coumarins, flavonoids, benzopyrans, etc. Additionally
Faisal A. Almalki
doaj   +1 more source

Six-membered ring systems: with O and/or S atoms [PDF]

open access: yes, 2013
A large variety of publications have emerged in 2012 involving O- and S-6- membered ring systems. The increasing number of reviews and other communica- tions dedicated to natural and synthetic derivatives and their biological significance highlights ...
Abe   +360 more
core   +1 more source

Antimicrobial activities of marine fungi from Malaysia [PDF]

open access: yes, 2010
Copyright 2011 Elsevier B.V., All rights reserved.Peer reviewedPublisher ...
Alias, S.A.   +6 more
core   +1 more source

Crystal structure of 2-amino-4-(4-methoxyphenyl)-4H-benzo[g]chromene-3-carbonitrile

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title compound, C21H16N2O2, the naphthalene fragment is twisted slightly, as indicated by the dihedral angle of 3.2 (2)° between the two six-membered rings. The pendant 4-methoxyphenyl ring makes a dihedral angle of 86.08 (6)° with the central six-
Joel T. Mague   +4 more
doaj   +1 more source

Quantitative Structure–Activity Relationships of Natural-Product-Inspired, Aminoalkyl-Substituted 1-Benzopyrans as Novel Antiplasmodial Agents

open access: yesMolecules, 2021
On the basis of the finding that various aminoalkyl-substituted chromene and chromane derivatives possess strong and highly selective in vitro bioactivity against Plasmodium falciparum, the pathogen responsible for tropical malaria, we performed a ...
Friederike M. Wunsch   +3 more
doaj   +1 more source

Photorelease of amino acids from novel thioxobenzo[f]benzopyran ester conjugates [PDF]

open access: yes, 2011
Aiming at the enhancement of the performance of (9-methoxy-3-oxo-3H-benzo[f]benzopyran-1-yl) methyl ester as photocleavable protecting group for the carboxylic acid function at long-wavelengths, 9-methoxy-3-thioxo-3H-benzo[f]benzopyran-L-valine and L ...
Costa, Susana P. G.   +3 more
core   +1 more source

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