Results 41 to 50 of about 176,257 (369)

Stereochemistry

Definitions, 2019
The study of the spatial groups that affect the properties of atoms within molecules.
Graham Patrick
semanticscholar   +1 more source

Addition of Di(trimethylsilyl) Phosphite to Schiff Bases of 2,5-Diformylfuran [PDF]

, 2011
A series of 2,5-Furanyl-bis-(aminomethylphosphonic Acids) has been synthesized by the addition of di(trimethylsilyl) phosphite to azomethine bond of achiral Schiff bases derved from 2,5-diformylfuran.
Ciechańska, Magdalena, Dzięgielewski, Marek, Lewkowski, Jarosław, Szcześniak, Aleksandra   +3 more
core   +1 more source

A unique bacteriohopanetetrol stereoisomer of marine anammox [PDF]

, 2020
Anaerobic ammonium oxidation (anammox) is a major process of bioavailable nitrogen removal from marine systems. Previously, a bacteriohopanetetrol (BHT) isomer, with unknown stereochemistry, eluting later than BHT using high performance liquid ...
Alex Charlton, E., Colin Murrell, J., Farhan Ul Haque, Muhammad, Hopmans, Ellen C., Jetten, Mike S.M., Lengger, Sabine K., Martin Jones, D., Normand, Philippe, Nuijten, Guylaine H.L., Rush, Darci, Schaeffer, Philippe, Schenesse, Margot, Schwartz-Narbonne, Rachel, Sinninghe Damsté, Jaap S., Talbot, Helen M.   +14 more
core   +5 more sources

Stereoisomerism in pentaerythritol-bridged cyclotriphosphazene tri-spiranes: spiro and ansa 1,3-propanediyldioxy disubstituted derivatives [PDF]

, 2005
Four isomeric products were isolated and purified from the reaction of 1,3-propanediol with the tetra-spirane cyclophosphazene-organophosphate compound (1): viz. the di-monospiro (2a), di-monoansa (2b) and two monospiro-monoansa derivatives (2c) and (2d).
Aylin, U., Coles, Simon J., Davies, David B., Eaton, R.J., Hursthouse, Michael B., Kiliç, A., Shaw, Robert A.   +6 more
core   +1 more source

DAG tales: the multiple faces of diacylglycerol—stereochemistry, metabolism, and signaling

Cellular and Molecular Life Sciences, 2015
The neutral lipids diacylglycerols (DAGs) are involved in a plethora of metabolic pathways. They function as components of cellular membranes, as building blocks for glycero(phospho)lipids, and as lipid second messengers.
Thomas O. Eichmann, A. Lass
semanticscholar   +1 more source

Amino Alcohols from the Ascidian Pseudodistoma sp.

Marine Drugs, 2014
Seven new amino alcohol compounds, pseudoaminols A–G (1–7), were isolated from the ascidian Pseudodistoma sp. collected off the coast of Chuja-do, Korea.
Tae Hyung Won, Minjung You, So-Hyoung Lee, Boon Jo Rho, Dong-Chan Oh, Ki-Bong Oh, Jongheon Shin   +6 more
doaj   +1 more source

A Concise Total Synthesis of (--)-Maoecrystal Z [PDF]

, 2011
The first total synthesis of (--)-maoecrystal Z is described. The key steps of the synthesis include a diastereoselective Ti^(III)-mediated reductive epoxide coupling reaction and a diastereoselective Sm^(II)-mediated reductive cascade cyclization ...
Cha, Jacob Y., Reisman, Sarah E., Yeoman, John T. S.   +2 more
core   +2 more sources

Teaching Stereochemistry with Multimedia and Hands-On Models: The Relationship between Students’ Scientific Reasoning Skills and The Effectiveness of Model Type

Center for Educational Policy Studies Journal
This paper presents an analysis of the use of multimedia and hands-on models on university students’ understanding of stereochemistry. The relationship between students’ scientific reasoning skills and their understanding of stereochemistry was also ...
Rooserina Kusumaningdyah, Iztok Devetak, Yudhi Utomo, Effendy Effendy, Daratu Putri, Habiddin Habiddin   +5 more
doaj   +1 more source

Synthesis and Oxidative Transformations of New Chiral Pinane-Type γ-Ketothiols: Stereochemical Features of Reactions

Molecules, 2021
Chiral γ-ketothiols, thioacetates, thiobenzoate, disulfides, sulfones, thiosulfonates, and sulfonic acids were obtained from β-pinene for the first time.
Olga M. Lezina, Svetlana N. Subbotina, Larisa L. Frolova, Svetlana A. Rubtsova, Denis V. Sudarikov   +4 more
doaj   +1 more source

A Practical Guide for Predicting the Stereochemistry of Bifunctional Phosphoric Acid Catalyzed Reactions of Imines.

Accounts of Chemical Research, 2016
Chiral phosphoric acids have become powerful catalysts for the stereocontrolled synthesis of a diverse array of organic compounds. Since the initial report, the development of phosphoric acids as catalysts has been rapid, demonstrating the tremendous ...
Jolene P. Reid, L. Simón, J. Goodman
semanticscholar   +1 more source