Results 111 to 120 of about 118,878 (273)
Beilstein Journal of Organic ChemistryOxindoles are an important class of compounds with significant biological activities. Spirocyclic derivatives are present in a variety of natural products.
Beth L. Ritchie +2 more
doaj +1 more source
Memory of Chirality in Radical Addition–Translocation–Cyclization Cascades
Helvetica Chimica Acta, EarlyView.Radical addition–translocation–cyclization cascades of chiral alkynes show striking memory of chirality (MoC), with strong retention of configuration when fast, polarity favored cyclization are involved. The most effective system employs a highly electron‐poor pentafluorobenzenesulfonyl group.
Christian Simon Gloor +3 more
wiley +1 more source
Preparation of 4 '-spirocyclobutyl nucleoside analogues as novel and versatile adenosine scaffolds
, 2019 Despite the large variety of modified nucleosides that have been reported, the preparation of constrained 4 '-spirocyclic adenosine analogues has received very little attention.
De Vleeschouwer, Freija +10 more
core +1 more source
Helvetica Chimica Acta, EarlyView.Breakdown of chlorophyll (Chl) is a fundamental biological phenomenon. In de‐greening banana leaves, Chl is transformed into colorless “fluorescent” Chl‐catabolites (FCCs) that cause the leaves to luminesce blue. Hypothesis‐driven search for apolar banana‐FCCs, and structure elucidation, have revealed a striking first link between lipid metabolism and ...
Clemens Vergeiner, Bernhard Kräutler
wiley +1 more source
Helvetica Chimica Acta, EarlyView.DBDI enables real‐time analysis of volatile terpenes and generates atmosphere‐dependent reagent ions that produce structure‐specific spectral patterns. By tuning humidity or dopant gases, DBDI‐MS differentiates terpene isomers that appear identical by EI.
Justine Raeber +4 more
wiley +1 more source
General Anesthetics: Aspects of Chirality, Pharmacodynamics, and Pharmacokinetics
PharmaceuticalsThe introduction of general anesthetics in the mid-19th century is considered one of the greatest contributions to medical practice. It was the first time that complicated surgical interventions became feasible, without putting an excessive strain on the
Ružena Čižmáriková +2 more
doaj +1 more source
JSFA reports, EarlyView.Abstract Background The lack of dependable, high‐quality forage and animal feedstuffs in many areas of the world hampers livestock production. In these regions, farmers often rely on native fodder tree and shrub leaves as a forage source for their animals with little or no information available on nutritional factors of these feedstuffs.
Ishrat Roomi +3 more
wiley +1 more source
Structure determination of new algal toxins using NMR methods [PDF]
, 2006 Shellfish are considered a delicacy by many consumers. In NZ, as in many overseas countries, there is a now thriv¬ing shellfish industry servicing both domestic and inter-national markets. Periodically shellfish accumulate harm¬ful levels of a variety of
Miles, Christopher O. +1 more
core
Bio‐Inspired, Zwitterionic Copolymers with Amphiphilic Character
Macromolecular Rapid Communications, EarlyView.Zwitterionic copolymers based on arginine‐derived monomers are produced by xanthate‐supported photo‐iniferter reversible‐addition‐fragmentation chain‐transfer polymerization. Experiments in relevant conditions show that the designed (co)polymers hardly interact with biologically relevant proteins and enzymes such as bovine serum albumine (BSA), fetal ...
Theresa M. Lutz +4 more
wiley +1 more source