Results 91 to 100 of about 30,818 (251)

Safranal epoxide – A potential source for diverse therapeutic applications

open access: yesSaudi Pharmaceutical Journal, 2018
Safranal is an organic compound isolated from saffron oil. Photo epoxidation and thermal reactions of safranal can be a significant tool for the design of drugs to act as anticancer agents and potent chemoprevention.
Suzan Khayyat, Eman Elgendy
doaj   +1 more source

Supported Metalloporphyrin Catalysts for Alkene Epoxidation

open access: yes, 2006
This review is devoted to the recent advances in the preparation of immobilised metalloporphyrins and their use as heterogeneous catalysts for alkene epoxidation.
Yolanda R. de Miguel   +3 more
core   +1 more source

Hidden Strategies Beneath a Single Nucleotide: Contrasting Physiology in Lichen Photobiont Strains

open access: yesPlant, Cell &Environment, EarlyView.
ABSTRACT Lichen photobionts exhibit significant physiological variability with important ecological implications. While this variability is relatively well studied at the interspecific level, it has rarely been examined at the intraspecific level. Here, we investigated the physiological responses to temperature and irradiance of two Trebouxia lynniae ...
Miguel Blázquez   +14 more
wiley   +1 more source

Epoxidation of styrene with NaOCl and catalyzed by nickel(II) complexes

open access: yes, 1999
Epoxidation of styrene was catalyzed by some nickel(II) complexes, with NaOCl as the oxygen donor. The catalyst Ni(PA)(2). 2H(2)O has been found to be stable for the epoxidation of styrene.
Yin, GC, Xi, ZW, Cao, GY
core  

Catalytic Enantioselective Epoxidation of Homoallylic Alcohols by Chiral Zirconium Complexes

open access: yes, 2016
Catalytic enantioselective epoxidation of homoallylic alcohols using Zr(Ot-Bu)4 and tartrate ester (or tartramide) has been developed. In the Zr(Ot-Bu)4/diisopropyl tartrate-catalyzed epoxidation, the reverse of the enantiofacial preference was observed,
Norio Murai (2078758)   +2 more
core   +1 more source

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

open access: yesPlant 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   +3 more
wiley   +1 more source

Finding safer replacements for dichloromethane: MCPBA epoxidation of alkenes in BTF and 2-MeTHF

open access: yesTetrahedron Green Chem
The U.S. Environmental Protection Agency (EPA) has placed a ban on most uses of dichloromethane (CH2Cl2) due to its highly toxic and carcinogenic nature. Several deaths have been attributed to CH2Cl2 exposure.
Shamanth Paramkusham   +5 more
doaj   +1 more source

Asymmetric Epoxidation of Alkenes Catalyzed by Porphyrin-inspired Manganese Complex

open access: yes, 2013
Asymmetric Epoxidation of Alkenes Catalyzed by Porphyrin-inspired Manganese ...
李军   +5 more
core  

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

open access: yesThe 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   +4 more
wiley   +1 more source

Ring‐Retentive Allylation of Cyclopropanols Through Interception of Enolized Homoenolates by π‐Allylpalladium

open access: yesAngewandte Chemie, Volume 138, Issue 44, 26 October 2026.
Cyclopropanols undergo palladium‐catalyzed, zinc‐mediated allylation with allyl acetates: the ring opens transiently to an enolized homoenolate, is intercepted by π‐allylpalladium, and recloses to furnish β‐allylated cyclopropanols. This formal “allylic cyclopropylation” broadens the reaction space for ring‐retentive functionalization of cyclopropanols.
Kento Tsukiji   +2 more
wiley   +2 more sources

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