Results 61 to 70 of about 57,067 (241)
Cross‐Dehydrogenative Coupling Reactions With Redox‐Active Guanidine Reagents
Chemistry – A European Journal, EarlyView.ABSTRACT Cross‐dehydrogenative coupling (CDC) reactions are attractive and environmentally friendly ways to form new C‐C and other element‐element bonds. Here, we report the first CDC reactions triggered by a redox‐active guanidine reagent. N‐phenyltetrahydroisoquinoline and derivatives with electron‐donating and withdrawing substituents at the N ...
Petra Walter +2 more
wiley +1 more source
Guanidine production by plant homoarginine-6-hydroxylases
eLifeMetabolism and biological functions of the nitrogen-rich compound guanidine have long been neglected. The discovery of four classes of guanidine-sensing riboswitches and two pathways for guanidine degradation in bacteria hint at widespread sources of ...
Dietmar Funck +3 more
doaj +1 more source
Multivalent RNA‐Cleaving Agents on a Cubic Octameric Silsesquioxane Core
Chemistry – A European Journal, EarlyView.RNA‐cleaving agents on a cubic octameric silsesquioxane core were synthesized and characterized. Several catalytic systems of these structures were screened using hexaribonucleotide models. The best systems were then further used to study their catalytic efficiency in cleaving a HER2 mRNA model sequence. The induced cleavage sites were also determined.
Hanni Haapsaari, Iris Tuomi, Pasi Virta
wiley +1 more source
Beilstein Journal of Organic Chemistry, 2009 Flavin chromophores can mediate redox reactions upon irradiation by blue light. In an attempt to increase their catalytic efficacy, flavin derivatives bearing a guanidinium ion as oxoanion binding site were prepared.
Harald Schmaderer +2 more
doaj +1 more source
Molecules, 2015 The ring-opening of N-tosylaziridines with various acid anhydrides catalyzed by 5 mol % of 1,5,7-triazabicyclo[4,4,0]dec-5-ene (TBD) afforded the corresponding β-amino esters in excellent yields under mild reaction conditions. Polymer-supported catalyst,
Satoru Matsukawa, Yasutaka Mouri
doaj +1 more source
The role of Rho GTPases in facial morphogenesis
Developmental Dynamics, EarlyView.The role of small GTPases, RHOA, RAC1, and CDC42 and pathway mediators is reviewed in the context of embryonic facial development. Lip fusion requires cytoskeletal remodeling during morphogenesis of the facial processes and during lip fusion. Fnm, frontonasal mass; lnp, lateral nasal process; mnp, medial nasal process; mxp, maxillary process; np, nasal
Isra Ibrahim, Joy M. Richman
wiley +1 more source
Ligand response of guanidine-IV riboswitch at single-molecule level
eLifeRiboswitches represent a class of non-coding RNA that possess the unique ability to specifically bind ligands and, in response, regulate gene expression.
Lingzhi Gao, Dian Chen, Yu Liu
doaj +1 more source
Anabolic pathway of guanidine acetic acid and application in animals production
Siliao yanjiu, 2022 Guanidine acetic acid is a naturally occurring amino acid derivative that acts as a direct precursor of creatine, an important compound in muscle and nerve tissue energy metabolism.
Yan-ling WANG +3 more
doaj
A Highly Selective and Sensitive Fluorescent Turn-Off Probe for Cu2+ Based on a Guanidine Derivative
Molecules, 2017 A new highly selective and sensitive fluorescent probe for Cu2+, N-n-butyl-4-(1′-cyclooctene-1′,3′,6′-triazole)-1,8-naphthalimide (L), was synthesized and evaluated. The structure of compound L was characterized via IR, 1H-NMR, 13C-NMR and HRMS.
Fei Ye +5 more
doaj +1 more source
Ion‐Enriched Porous Organic Polymer for Gold Recovery From E‐Waste
EcoEnergy, EarlyView.A novel ion‐enriched porous organic polymer was designed and synthesized. It exhibits ultrahigh gold adsorption efficiency with capacity up to 1530.9 mg g−1, and also shows selective capture ability towards gold ions in the actual CPU leaching solution, demonstrating its promising potential for gold recovery from actual e‐waste.
Rui Zhang +8 more
wiley +1 more source