Results 41 to 50 of about 166,370 (359)
Molecules, 2022 Herein the reaction mechanism and the origin of stereoselectivity of asymmetric hydrogenation of oximes to hydroxylamines catalyzed by the cyclometalated iridium (III) complexes with chiral substituted single cyclopentadienyl ligands (Ir catalysts A1 and
Qaim Ali +6 more
doaj +1 more source
Kinetic and sequence-structure-function analysis of known LinA variants with different hexachlorocyclohexane isomers [PDF]
, 2015 BACKGROUND Here we report specific activities of all seven naturally occurring LinA variants towards three different isomers, α, γ and δ, of a priority persistent pollutant, hexachlorocyclohexane (HCH).
Jackson, Colin J +7 more
core +1 more source
Atropselective syntheses of (-) and (+) rugulotrosin A utilizing point-to-axial chirality transfer [PDF]
, 2015 Chiral, dimeric natural products containing complex structures and interesting biological properties have inspired chemists and biologists for decades.
A Zask +53 more
core +8 more sources
Terminal substituent effects on the reactivity, thermodynamics, and stereoselectivity of the 8π-6π electrocyclization cascades of 1,3,5,7-tetraenes. [PDF]
, 2014 M06-2X/6-31+G(d,p) computations are reported for the 8π-6π electrocyclization cascades of 1,3,5,7-tetraenes. The rate-determining step for these cascades is typically the second (6π) ring closure.
Houk, KN, Patel, Ashay
core +2 more sources
Synthesis of Glycosides of Glucuronic, Galacturonic and Mannuronic Acids: An Overview
Molecules, 2011 Uronic acids are carbohydrates present in relevant biologically active compounds. Most of the latter are glycosides or oligosaccharides linked by their anomeric carbon, so their synthesis requires glycoside-bond formation. The activation of this anomeric
José Kovensky, Anne Wadouachi
doaj +1 more source
Molecules, 2023 Pioglitazone, a PPAR-gamma activator used to diagnose hyperglycemia, was studied for its stereoselective deposition and active enantiomers in female albino Wistar rats.
Tatineni Spandana +8 more
doaj +1 more source
Metal-free syn-dioxygenation of alkenes [PDF]
, 2013 Reactions employing inexpensive reagents from sustainable sources and with low toxicity are becoming increasingly desirable from an academic and industrial perspective.
Ashikari +60 more
core +1 more source
The intermolecular hydro-oxycarbonylation of internal alkynes: current state of the art [PDF]
, 2018 The authors acknowledge the Spanish MINECO (projects CTQ2013-40591-P and CTQ2016-75986-P) and the Gobierno del Principado de Asturias (project GRUPIN14-006) for financial support. J. F.
Cadierno Menéndez, Victorio +3 more
core +2 more sources
Diastereo- and enantioselective preparation of cyclopropanol derivatives
Beilstein Journal of Organic Chemistry, 2019 The diastereoselective carbocupration reaction of alkoxy-functionalized cyclopropene derivatives, followed by a subsequent trapping of the resulting cyclopropylmetal species with an electrophilic source of oxygen (oxenoid) afforded various ...
Marwan Simaan, Ilan Marek
doaj +1 more source
Molecules, 2023 A density functional theory (DFT) study combined with the steric maps of buried volume (%VBur) as molecular descriptors and an energy decomposition analysis through the ASM (activation strain model)–NEDA (natural energy decomposition analysis) approach ...
Olga D’Anania +2 more
doaj +1 more source