Results 51 to 60 of about 58,017 (220)

Separation and lipophilicity of some new steroid derivatives in normal- and reversed-phase high performance liquid chromatography [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2011
The separation ability and retention of normal and reversed phase HPLC with, respectively, three non-polar and two polar mobile phases, have been studied by measuring the retention constants of a series of newly synthesized estrone derivatives.
Ačanski Marijana M., Vujuć Đura N., Jovanović-Šanta Suzana   +2 more
doaj   +1 more source

A Sulfuryl Group Transfer Strategy to Selectively Prepare Sulfated Steroids and Isotopically Labelled Derivatives

Frontiers in Molecular Biosciences, 2021
The treatment of common steroids: estrone, estradiol, cortisol, and pregnenolone with tributylsulfoammonium betaine (TBSAB) provides a convenient chemoselective conversion of the steroids alcohol/phenol moiety to the corresponding steroidal organosulfate.
Jaber A. Alshehri, Daniel M. Gill, Alan M. Jones   +2 more
doaj   +1 more source

Synthesis of Aminocyclopropanes by Redox‐Neutral Aminoalkylation

Angewandte Chemie International Edition, EarlyView.
Aminocyclopropane synthesis by hydroaminoalkylation utilizing cheap, readily available starting materials is presented, offering orthogonality to commonly used methods and allowing broad functional‐group tolerance. Solvent‐mediated conditions enable the reaction of a pre‐formed hemiaminal with alkenes and alkynes.
Gwyndaf A. Oliver, Konstantin Günther, Chiara Sebastianelli‐Schoditsch, Sophie Woolford, Iina Ludwig, Harald H. Sitte, Nuno Maulide   +6 more
wiley   +1 more source

PREPARATION OF AN ESTRONE–PROTEIN CONJUGATE

, 1958
A procedure is described for the preparation of an estrone–protein conjugate. The 17-amino derivative of estrone was prepared and converted by phosgenation to estrone-17-isocyanate. The latter was coupled to rabbit serum albumin. Ultraviolet analysis and
L. Goodfriend, A. H. Sehon
core   +1 more source

Binding of estrone to hollow fibre membranes in microfiltration of solutions containing trace estrone [PDF]

, 2002
Increased concern is being paid to the health and environmental risk caused by trace natural and synthetic hormones discharged from sewage treatment plants.
T.D. Waite, A.I. Schäfer, S. Chang, A.G. Fane   +3 more
core   +2 more sources

A Systematic Review of Estrogens as Emerging Contaminants in Water: A Global Overview Study from the One Health Perspective

Journal of Xenobiotics
The widespread presence of estrogens in aquatic environments represents a One Health concern, as it simultaneously threatens environmental integrity, wildlife health, and human well-being.
Rhitor Lorca da Silva, Marco Antonio Lima e Silva, Tiago Porfírio Teixeira, Thaís Soares Farnesi de Assunção, Paula Pinheiro Teixeira, Wagner Antonio Tamagno, Thiago Lopes Rocha, Julio Cesar de Souza Inácio Gonçalves, Matheus Marcon   +8 more
doaj   +1 more source

Rapid and Reusable Amino Acid–Derived MOFs for the Removal of Estrogenic Hormones From Real Water Matrices

Chemistry – A European Journal, EarlyView.
A family of amino‐acid–derived MOFs enables ultrafast (>90–95% in 30 s) simultaneous removal of four estrogenic contaminants from water under SPE conditions. A leucine‐based MOF shows excellent regenerability and robustness in real samples, with structural evidence revealing efficient hormone encapsulation.
Lidia García, Alejandro Cortés‐Villena, Héctor Martínez Pérez‐Cejuela, José Manuel Herrero‐Martínez, Jesús Ferrando‐Soria, Thais Grancha, Donatella Armentano, Emilio Pardo   +7 more
wiley   +1 more source

Metabolism of sex hormones in the aortic wall

Journal of Lipid Research, 1968
The metabolism of labeled sex hormones was examined in human, canine, and rat aortas. Isolated arterial tissue converted estrone to estradiol, estradiol to estrone, and estrone sulfate to estrone and estradiol.
Aram V. Chobanian, Peter I. Brecher, Robert D. Lille, Herbert H. Wotiz   +3 more
doaj   +1 more source

Selective N‐Functionalization of Pyrazoles

European Journal of Organic Chemistry, EarlyView.
This review traces the evolution of regioselective N‐functionalization strategies for pyrazoles, a key class of nitrogen heterocycles widely used in medicinal chemistry. Due to rapid tautomerism, N‐functionalization often lacks selectivity, leading to poor and unpredictable regioisomeric outcomes.
Lucas Popek, Matthias Schrader, Christopher J. Teskey   +2 more
wiley   +1 more source

Personalized multimodal physiological modeling of menstrual cycle dynamics using endocrine, metabolic and wearable signals

Journal of Intelligent Medicine, EarlyView.
Abstract Menstrual cycle tracking remains challenged by the limited physiological scope and inconsistent generalizability of existing wearable‐based approaches, which often rely on individual sensing modalities that incompletely capture the complexity of menstrual physiology.
Ejay Nsugbe, Georgianna Lin
wiley   +1 more source