Results 111 to 120 of about 29,601 (261)

Nucleophilic Epoxidation of α‘-Hydroxy Dienyl Sulfoxides

, 2016
A novel route to enantiopure densely functionalized epoxy sulfinyl tetrahydrofurans, based on the unexpected and highly stereoselective remote nucleophilic epoxidation of hydroxy 1-sulfinyl butadienes with t-BuOOK, followed by ring closure and subsequent
Martín Martínez-Ripoll (2979219), Julián Priego (2650720), Roberto Fernández de la Pradilla (2420758), Luis A. Martínez-Cruz (615736), Pilar Manzano (650253), Carlos Montero (788984)   +5 more
core   +1 more source

The Oral‐Hepatic Axis: Epidemiological and Mechanistic Links Between Periodontal and Liver Diseases

Journal of Periodontal Research, EarlyView.
This review summarizes current epidemiological, clinical and mechanistic evidence linking periodontitis and chronic liver diseases, highlighting the oral‐gut‐liver axis, shared immunometabolic and nutritional pathways and opportunities for integrated preventive and therapeutic strategies.
Sinem Esra Sahingur, Kinga Grzech‐Leśniak, Samuel F. Suslavich, Janina Golob Deeb   +3 more
wiley   +1 more source

Chiral imidazolium and triazolium salts as NHC and aNHC ligand precursors: A promising framework for asymmetric epoxidation catalysis

Results in Chemistry
Two chiral imidazolium salts and one chiral triazolium salt were synthesized containing a chiral cyclohexane bridge based on the salen ligand framework of the Jacobsen-Katsuki epoxidation catalysts.
Tim P. Schlachta, Leon F. Richter, Fritz E. Kühn   +2 more
doaj   +1 more source

Asymmetric epoxidation catalyzed by chiral ketones

, 2011
Chiral ketones have been developed as efficient catalysts for asymmetric alkene epoxidation in the past decades. The development of different classes of chiral ketones for asymmetric epoxidation of unfunctionalized alkenes will be discussed. In addition,
Yang, D, Yiu Chung Yip, Yip, YC, Wong, MK, Man Kin Wong, Dan Yang   +5 more
core   +1 more source

Divergent structure–function coordination shapes leaf thermal tolerance in Mediterranean tree species

Plant Biology, EarlyView.
Tcrit (critical temperature) may reflect early, adaptive photoprotective downregulation of PSII in Quercus ilex, whereas in Acer campestre and Fraxinus ornus, it may more closely correspond to the onset of thermal PSII vulnerability. Abstract Increasing temperatures impair photosynthetic apparatus by damaging photosystem II (PSII) efficiency.
L. Friulla, L. M. Iozia, M. F. Crescente, L. Varone   +3 more
wiley   +1 more source

Melon seed oil epoxidation: Kinetics and neuro-fuzzy evaluation

South African Journal of Chemical Engineering
Melon seed oil (MSO) is characterized by unsaturated triglycerides, making it a suitable candidate for epoxidation. This work explored the kinetic and Optimization of MSO epoxidation by the in-situ generation of peroxyacetic acid.
Kenechi Nwosu-Obieogu, Emenike Grace, Goziya W. Dzarma, Felix O. Aguele, Linus I. Chiemenem, Ohabuike Gabriel, Maureen Allen, Nwankwo Ekeoma   +7 more
doaj   +1 more source

Arabinose-derived ketones in catalytic asymmetric epoxidation. [PDF]

, 2005
Luk To.Thesis (M.Phil.)--Chinese University of Hong Kong, 2005.Includes bibliographical references (leaves 115-123).Abstracts in English and Chinese.Contents --- p.iAcknowledgement --- p.iiAbstract --- p.iiiAbbreviation --- p.viChapter 1 ...

core  

Maternal nutrition as a key determinant of placental and developing blood–brain barrier xenobiotic protective functions

The Journal of Physiology, EarlyView.
Abstract figure legend Suboptimal maternal nutrition alters placental and developing blood–brain barrier (BBB) protective function and is associated with increased fetal brain vulnerability. In the placenta, nutritional adversity may reduce the exchange surface area and promote meta‐inflammation, compromising barrier efficiency in a model‐ and context ...
Kristin L. Connor, Nycolle I. S. Souza, Bruno G. Anjos, Stephen G. Matthews, Enrrico Bloise   +4 more
wiley   +1 more source

Direct epoxidation of olefins catalyzed by heteropolyoxometalates with molecular oxygen and recyclable reductant

, 2001
A new epoxidation system is reported in this communication. Heteropolyoxometalates catalyst/recyclable reductant 2-ethylanthrahydroquinone/O-2 is employed for epoxidation of olefins.
Li, M, Xi, ZW, Wang, HP, Sun, Y, Zhou, N, Cao, GY   +5 more
core  

Spatial and temporal scales in plant phenotyping for crop water stress assessment: A review

The Plant Phenome Journal, Volume 9, Issue 1, December 2026.
Abstract Water stress is a major limiting factor for crop productivity worldwide, and its impacts are intensifying due to climate variability and increasing water scarcity. This review focuses on the spatial and temporal scales in plant phenotyping as a critical approach to improving crop water‐stress assessment and supporting precision water ...
Daniel Kingsley Cudjoe, Yazhou Sun, Sanai Li, Wenxuan Guo   +3 more
wiley   +1 more source