Results 61 to 70 of about 58,537 (265)

Stereochemical Research on Cembranes Diterpenoid Sinulariol Z Based on Residual Dipolar Couplings

open access: yesChinese Journal of Magnetic Resonance
Research on the stereochemistry of natural products, especially that of flexible macrocyclic molecules, has always been a huge challenge. Cembranes diterpenoids are a typical class of flexible macrocyclic molecules, whose configurations are often ...
SHI Xing   +3 more
doaj   +1 more source

DESIGN OF AN EDUCATIONAL GAME AND ITS USE IN A TEAM GAME TOURNAMENT AS A STRATEGY TO ENGAGE STUDENTS IN REVIEWING STEREOCHEMISTRY CONCEPTS [PDF]

open access: yesQuímica Nova
This paper presents a Chemistry Team Game Tournament (TGT) as a didactic strategy to review stereochemistry concepts. For this purpose, a multilingual (English, Italian, French, and Portuguese) educational game, Stereochemistry Race, was developed on the
José Nunes da Silva Júnior   +8 more
doaj   +1 more source

Cover Picture: Dynamic Stereochemistry of M8Pd6 Supramolecular Cages Based on Metal‐Center Lability for Differential Chiral Induction, Resolution, and Recognition (Angew. Chem. Int. Ed. 2/2024) [PDF]

open access: bronze, 2023
Yin‐Hui Huang   +9 more
openalex   +1 more source

Stereochemistry [PDF]

open access: yes, 2020
This short chapter is really just to set the scene for the rest of the book, highlighting the importance of stereochemistry and the approaches we can use to study the topic. Don't worry if the new material appears daunting at this point. We'll go through it slowly in the relevant chapters.
  +4 more sources

Regio- and stereochemical stability induced by anomeric and gauche effects in difluorinated pyrrolidines

open access: yesBeilstein Journal of Organic Chemistry
Selective fluorination of the pyrrolidine ring in proline motifs has been found to induce significant conformational changes that impact the structure and biological roles of modified peptides and proteins.
Ana Flávia Candida Silva   +2 more
doaj   +1 more source

Biologically Important Eremophilane Sesquiterpenes from Alaska Cedar Heartwood Essential Oil and Their Semi-Synthetic Derivatives

open access: yesMolecules, 2011
The essential oil of Alaska cedar heartwood is known to contain compounds which contribute to the remarkable durability of this species. While previous research has identified several compounds, a complete description of this oil has not been undertaken.
Joe J. Karchesy   +3 more
doaj   +1 more source

Caylobolide B: Structure Revision, Total Synthesis, Biological Characterization, and Discovery of New Analogues. [PDF]

open access: yesAngew Chem Int Ed Engl
Marine polyhydroxylated macrolides’ drug discovery potential is limited by structural complexity and scarce material supply, hindering structure assignment, synthesis, and biological studies. Here, we present an integrated workflow that combines chemogenomic profiling, ultra‐high‐resolution NMR‐guided structural revision and stereochemical assignment ...
George MRP   +9 more
europepmc   +3 more sources

Ortho‐Quinone Methide Driven Synthesis of New O,N‐ or N,N‐Heterocycles

open access: yesChemistryOpen, 2019
To synthesize functionalized Mannich bases that can serve two different types of ortho‐quinone methide (o‐QM) intermediates, 2‐naphthol and 6‐hydroxyquinoline were reacted with salicylic aldehyde in the presence of morpholine.
Dr. István Szatmári   +5 more
doaj   +1 more source

Basic Concepts in Organic Stereochemistry [PDF]

open access: gold, 2022
Sunil Kumar Talapatra, Bani Talapatra
openalex   +1 more source

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