Results 81 to 90 of about 18,988 (252)

Flavonoids of Lonchocarpus montanus A.M.G. Azevedo and biological activity

open access: yesAnais da Academia Brasileira de Ciências, 2007
The analysis of root extracts from Lonchocarpus montanus A.M.G. Azevedo resulted in the isolation of twenty three compounds chiefly flavonoids of which five (four flavonoids and one benzophenone) are described for the first time. The molecular structures
Aderbal F. Magalhães   +5 more
doaj   +1 more source

Bioremediation of Benzophenone by Glycosylation with Immobilized Marine Microalga Chrysocampanulla spinifera and Amphidinium crassum [PDF]

open access: yes, 2011
Reduction and glycosylation of benzophenone, which is an endocrine disrupting chemical, were investigated using immobilized marine microalga and plant cells from the viewpoint of bioremediation of benzophenone.
Hatsuyuki Hamada   +6 more
core   +1 more source

Methyl on the Bridge: 2‐Methyl Propellane as Precursor for 1,3‐Substituted 2‐Methylated Bicyclo[1.1.1]Pentanes

open access: yesChemistry – A European Journal, EarlyView.
The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve   +4 more
wiley   +1 more source

Fibrate-based N-acylsulphonamides targeting carbonic anhydrases: synthesis, biochemical evaluation, and docking studies

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2019
A large library of fibrate-based N-acylsulphonamides was designed, synthesised, and fully characterised in order to propose them as zinc binders for the inhibition of human carbonic anhydrase (hCA) enzymatic activity.
Alessandra Ammazzalorso   +9 more
doaj   +1 more source

Lewis‐Acidic Properties and Catalytic Behavior of Hydroboration‐ and Diolysis‐Derived NHC‐Stabilized Borenium Cations

open access: yesChemistry – A European Journal, EarlyView.
A series of thirteen (N‐heterocyclic carbene) NHC‐stabilized borenium cations is synthesized from NHC→BH3 complexes via hydroboration and condensation with diols. The novel compounds are fully characterized. Eight crystal structures are presented. Kinetic and NMR data show how the structural features translate to catalytic activity in hydrosilylation ...
Michał Jakubczyk   +4 more
wiley   +1 more source

Three cases of photoallergic contact dermatitis induced by the ultraviolet absorber benzophenone that occurred after dermatitis due to ketoprofen‐Investigation of cosensitization with other ultraviolet absorbers and patient background

open access: yesJournal of Cutaneous Immunology and Allergy, 2019
Objectives Three teenage patients developed dermatitis at the site of contact of a free‐pass wristband from an amusement park. Each had experienced dermatitis due to ketoprofen.
Tomoko Tanahashi   +3 more
doaj   +1 more source

The Role of Iron‐Hyponitrite Intermediates in Biology and Insights From Synthetic Model Complexes

open access: yesChemistry – A European Journal, EarlyView.
Despite the difference in active site architecture, NO reduction by different NOR enzymes is expected to be linked by a common intermediate: hyponitrite (N2O22−). However, experimentally, very little is known about the coordination chemistry of iron with hyponitrite and the expected Fe‐hyponitrite intermediates.
Michael O. Lengel, Nicolai Lehnert
wiley   +1 more source

New Ent-Kaurane-Type Diterpene Glycosides and Benzophenone from Ranunculus muricatus Linn.

open access: yesMolecules, 2015
Two new ent-kaurane diterpene glycosides, ranunculosides A (1) and B (2), and a new benzophenone, ranunculone C (3), were isolated from the aerial part of Ranunculus muricatus Linn. The chemical structures of compounds 1–3 were established to be (2S)-ent-
Bi-Ling Wu   +4 more
doaj   +1 more source

Determination of diphenylphthalate and benzophenone in foodstuffs [PDF]

open access: yes, 2006
An analytical method was developed for the determination of migration levels of diphenyl phthalate and benzophenone into foodstuffs coming into contact with plastics.
Steiner, Ingrid, Volansky, Peter
core  

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