Results 11 to 20 of about 13,993 (189)

Pyrethroid Stereoisomerism: Diastereomeric and Enantiomeric Selectivity in Environmental Matrices – A Review [PDF]

Orbital: The Electronic Journal of Chemistry, 2018
Pyrethroids are chiral insecticides characterized by stereoisomerism, which occurs due to the presence of one to three asymmetric (chiral) carbons, generating one or two pairs of cis/trans diastereomers, and two or four pairs of enantiomers ...
Cláudio Ernesto Taveira Parente, Claudio Eduardo Azevedo-Silva, Rodrigo Ornellas Meire, Olaf Malm   +3 more
doaj   +5 more sources

Development of an open-source software for isomer enumeration

Journal of Cheminformatics, 2023
This article documents enu, a freely-downloadable, open-source and stand-alone program written in C++ for the enumeration of the constitutional isomers and stereoisomers of a molecular formula.
Salomé R. Rieder, Marina P. Oliveira, Sereina Riniker, Philippe H. Hünenberger   +3 more
doaj   +1 more source

Early contributions of crystallography to the atomic theory of matter

Substantia, 2019
After briefly presenting early hypotheses on the submicroscopic origin of symmetry and polyhedral morphology in the crystals, the structural model proposed by Haüy in 1784, based on the periodic repetition of integrant molecules made up of simple ...
Giovanni Ferraris
doaj   +1 more source

A Novel Type of Stereoisomerism in Calix[4]arene‐Based Carceplexes [PDF]

, 1994
Different orientations of the guest in the cavity of a carcerand lead to a new type of stereoisomerism, “carceroisomerism”. The structure of the host–guest compound (which is shown on the cover of this issue) and its dynamic behavior was studied in ...
van Duynhoven, John P.M., John P. M. van Duynhoven, van Veggel, Frank C.J.M., Frank C. J. M. van Veggel, David N. Reinhoudt, Timmerman, Peter, Willem Verboom, Verboom, Willem, Peter Timmerman, Reinhoudt, David N.   +9 more
core   +1 more source

SI for Paper Self-Assembly, Adaptive Response and in,out-Stereoisomerism of Large Orthoformate Cryptands

, 2020
Additional Supporting information for computational studies for the paper "Self-Assembly, Adaptive Response and in,out-Stereoisomerism of Large Orthoformate Cryptands"by Henrik Löw, Elena Mena-Osteritz, Kathleen M. Mullen, Christof M. Jäger,* and Max von
Christof Jaeger (3340812)
core   +1 more source

Stereoisomere Phenylbrommilchsäuren [PDF]

Berichte der deutschen chemischen Gesellschaft, 1899
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Erlenmeyer, E., Moebes, A.
openaire   +2 more sources

Stereoisomerism of medicinal substances and its influence on the therapeutic effect [PDF]

, 2023
Universitatea de Stat de Medicină şi Farmacie „Nicolae Testemiţanu”, Chişinău, Republica MoldovaIntroducere. Stereoizomeria reprezintă o caracteristică esențială al substanțelor medicamentoase, având un impact semnificativ asupra eficacității ...
Dragni, Olga, Ştefaneţ, Tatiana, Treapițîna, Tatiana   +2 more
core  

Stereoisomerism and Conformational Directionality (Prelog Lecture)

CHIMIA, 1986
The inaugural Prelog Lecture provides me with a unique opportunity to pay tribute to a great scientist, teacher, and friend. As I hope to show, the work of Vladimir Prelog is profoundly relevant to the work that I want to describe today.
Kurt Mislow
doaj   +1 more source

Stereoselective formation of bismuth complexes by transmetalation of lead with adaptable overhanging carboxylic acid 5,10-strapped porphyrins

Comptes Rendus. Chimie, 2021
Out-of-plane deformations of metalloporphyrin skeletons have been well documented as playing important roles in relevant biological processes. In contrast, out-of-plane binding to the N-core of large metal cations as period 6 post-transition elements has
Barakat, Wael, Hijazi, Ismail, Roisnel, Thierry, Dorcet, Vincent, Le Gac, Stéphane, Boitrel, Bernard   +5 more
doaj   +1 more source

The role of stereochemistry of antibiotic agents in the development of antibiotic resistance in the environment

Environment International, 2020
Antibiotic resistance (ABR) is now recognised as a serious global health and economic threat that is most efficiently managed via a ‘one health’ approach incorporating environmental risk assessment.
Felicity C.T. Elder, Edward J. Feil, JasoN. Snape, William H. Gaze, BarbarA. Kasprzyk-Hordern   +4 more
doaj   +1 more source