Results 51 to 60 of about 185,877 (187)

Neuroactive Steroids. 1. Positive Allosteric Modulators of the (γ-Aminobutyric Acid)A Receptor: Structure–Activity Relationships of Heterocyclic Substitution at C‑21

open access: yes, 2015
Neuroactive steroids (NASs) have been shown to impact central nervous system (CNS) function through positive allosteric modulation of the GABAA receptor (GABAA-R). Herein we report the effects on the activity and pharmacokinetic properties of a series of
Scott J. Grossman (1613350)   +14 more
core   +1 more source

The Boron–Neuron Connection: The Potential of Boron‐Containing Molecules for Treating Incurable Amyotrophic Lateral Sclerosis

open access: yesChemMedChem, Volume 21, Issue 21, 12 November 2026.
Can a single element help address the multifactorial nature of ALS? Boron‐containing compounds combine responsiveness to reactive oxygen species (ROS), neuroprotective activity, and favorable pharmacological properties, offering a distinctive framework for disease modification in a complex disease like ALS.
Nitesh Sanghai   +5 more
wiley   +1 more source

Comparative Genome‐Wide Association Studies of Metabolites and Grain‐Related Traits in Common Wheat

open access: yesPlant Biotechnology Journal, Volume 24, Issue 11, Page 5911-5926, November 2026.
ABSTRACT The metabolome is highly diverse and the closest layer to phenotype; therefore, it is commonly regarded as a bridge between the genome and phenome in plants. Here, we performed large‐scale metabolome analysis using liquid chromatography–tandem mass spectrometry (LC–MS/MS) and 33 grain‐related traits in a diverse panel of natural accessions and
Guoguo Lv   +11 more
wiley   +1 more source

FeIII‐Mediated Synthesis of Azaspirodienones via Ipso‐Radical Cyclization of Ugi–4CR Adducts

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 39, 22 October 2026.
An efficient two‐step protocol for the synthesis of azaspirodienones via Fe‐mediated ipso‐radical cyclization of Ugi adducts has been developed. This methodology provides rapid access to these privileged spirocyclic architectures under mild conditions, offering a practical and versatile approach to generating structurally complex molecules with ...
Silvia J. Becerra–Anaya   +2 more
wiley   +1 more source

New A-nor steroids and their antifouling activity from the Chinese marine sponge Acanthella cavernosa

open access: yes, 2008
National Hi-Tech Development Project (863 project) [2006AA09Z446, 2006DFA31100, 2006AA09Z405]; NSFC [30672607, 30600053, 40176038, 30171106]; International Cooperation Projects of BMBF-MOSTA chemical examination of the Chinese sponge Acanthella cavernosa
邱彦   +5 more
core  

Steroids [PDF]

open access: yes, 2011
Steroids: The basic science and clinical aspects covers the modern understanding and clinical use of steroids. The history of steroids is richly immersed and runs long and deep.

core   +1 more source

Development of a Method of Analysis by Gas Chromatography-Mass Spectrometry using Selected Ion Monitoring for the Measurement of Fish Sex Steroids in Water [PDF]

open access: yes, 2009
A method for the analysis of testosterone, androstenedione, 5β-dihydrotestosterone, 11-ketotestosterone, estrone, 17β-estradiol, 17α-hydroxyprogesterone, 17α,20β-dihydroxy-4-pregnen-3-one, 5β-pregnane-3α,17α,20α-triol, 5β-androstane-3α,17β-diol, 5β ...
Boult, Cherie Helen
core  

A novel acid catalysed cyclization - synthesis and X-ray crystal structure analysis of 8-Acetoxy-6-(2,4-Dimethoxy-5 -Bromophenyl)-3-Methyltricyclo(5,2,1,03,8)Decan-2-one [PDF]

open access: yes, 1972
In connection with the total synthesis of heterocyclic steroids, we undertook the synthesis of a B-secosteroid intermediate (I) starting from 2',3,4'-trimethoxy-propiophenone [1]. Examples involving a 'B-seco' approach for the total synthesis of steroids
Ramachandra, R   +3 more
core   +1 more source

H-1 NMR determination of adulteration of anabolic steroids in seized drugs

open access: yes, 2018
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Counterfeiting and adulteration of pharmaceuticals is a prevalent problem worldwide and represents a major health risk to the population, with anabolic steroids being one of the main ...
Pezza, Leonardo [UNESP]   +9 more
core   +1 more source

Determination, intercorrelation and intraindividual stability of five steroids in hair, saliva and urine among chinese college students

open access: yes, 2019
Hair steroids and their ratios are believed to be reliable biomarkers reflecting the long-term exposure of circulating steroids. Hereinto, two underlying assumptions are that hair biomarkers have consistency with traditional biomarkers in saliva or urine,
Wang, Weiwen   +5 more
core   +1 more source

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