Results 231 to 240 of about 174,911 (284)

Woodward–Hoffmann’s Stereochemistry of Electrocyclic Reactions: From Day 1 to the JACS Receipt Date (May 5, 1964 to November 30, 1964)

Journal of Organic Chemistry, 2015
The publication in January 1965 of the first Woodward–Hoffmann paper, The Stereochemistry of Electrocyclic Reactions, ushered into organic chemistry both an explanation of the stereochemistry and “allowedness” or “forbiddenness” of concerted reactions ...
J. I. Seeman
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Stereochemistry

2011
info:eu-repo/semantics ...
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Nanoparticle stereochemistry-dependent endocytic processing improves in vivo mRNA delivery

Nature Chemistry, 2023
Marine Z. C. Hatit, C. Dobrowolski, Melissa P. Lokugamage, David Loughrey, Huanzhen Ni, C. Zurla, Alejandro J Da Silva Sanchez, Afsane Radmand, Sebastian G. Huayamares, Ryan Zenhausern, Kalina Paunovska, H. Peck, Jinwhan Kim, Manaka Sato, Jacob I Feldman, Michael A. Rivera, A. Cristian, Yongtae Kim, P. Santangelo, J. Dahlman   +19 more
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Stereochemistry and Bioequivalence

The Journal of Clinical Pharmacology, 1992
Despite the fact that many important drugs are chiral, for a variety of reasons they are marketed as racemates (i.e., an equal proportion of two enantiomers). Although enantiomers of racemic drugs often differ from one another in their pharmacodynamic and pharmacokinetic properties, bioequivalence assessments are made using nonstereospecific assays ...
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Stereochemistry of the methoxyphthioceranes

Journal of the Chemical Society D: Chemical Communications, 1970
The phthiocerols, RCH(OMe)·CHMe·[CH2]4·CH(OH)·CH2·CH(OH)·[CH2]nMe (R = Et or Me, n= 20 and 22), constituents of tuberculolipids, have been converted, by substituting H for each OH, into the corresponding methoxyphthioceranes A and B (R = Et or Me, respectively).
Nicholas Polgar, Kenneth Maskens
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The synthesis and stereochemistry of desacetoxymatricarin and the stereochemistry of matricarin

Tetrahedron, 1969
Abstract Desacetoxymatricarin (IV), a sesquiterpene lactone found in the genus Artemisia and in the form of 8-hydroxy and acetoxy derivatives in the genus Achillea, has been synthesized from α-santonin by a sequence that allows assignment of the full stereochemistry. The stereochemistry of matricarin (V) has also been determined.
J.N. Marx, S. Eguchi, Emil H. White
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Stereochemistry of iron in deoxyhaemoglobin

Nature, 1982
The EXAFS of human deoxyhaemoglobin closely resembles that of a synthetic model in which the displacement of the iron from the mean porphyrin plane is 0.426 +/- 0.004 A, similar to the displacement of 0.56 +/- 0.03 A found by single crystal X-ray analysis of deoxyhaemoglobin.
J. E. Hahn, S. Samar Hasnain, Max F. Perutz, J. L. Sessler, P. J. Duke   +4 more
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Stereochemistry of Life

Interdisciplinary Science Reviews, 1984
AbstractThe chirality of living matter, and of its chemical processes, is reviewed. It is argued that the development of chiral self-replicating systems from nonliving maner is perfectly possible from precursors tbat are available only in racemic form, and that external chiral influences are unnecessary for this development.
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Stereochemistry of polypeptide chain configurations.

Journal of Molecular Biology, 1963
G. N. Ramachandran, C. Ramakrishnan, V. Sasisekharan   +2 more
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Practical Stereochemistry

Accounts of Chemical Research, 2017
The relationship between fundamental and applied is often uneasy, particularly in modern political climates. A familiar political view, aimed negatively at the scientific community, is that the former is a waste of money whereas the latter gives value for investment.
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