steric orientation
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Are the known ?2-cephems inactive as antibiotics because of an unfavourable steric orientation of their 4?-carboxylic group? Synthesis and biology of two ?2-cephem-4?-carboxylic acids

1987 ◽  
Vol 70 (7) ◽  
pp. 1967-1979 ◽  
Author(s):  
Nissim C. Cohen ◽  
Ivan Ernest ◽  
Riccardo Scartazzini ◽  
Peter Wirz ◽  
Hans Fritz ◽  
...  
Keyword(s):  
Carboxylic Acids ◽  
Carboxylic Group ◽  
Steric Orientation

Steric orientation of hapten groups and the effect on antibody reactivity

1977 ◽  
Vol 14 (4) ◽  
pp. 237-246 ◽  
Author(s):  
Edward W. Voss ◽  
Robert M. Watt
Keyword(s):  
Antibody Reactivity ◽  
Steric Orientation

scholarly journals Diels-Alder Reactions of 2,4-Cyclohexadienones. I. Structural and Steric Orientation in the Dimerisation of 2,4-Cyclohexadienones.

1974 ◽  
Vol 28b ◽  
pp. 465-472 ◽  
Author(s):  
Erich Adler ◽  
Krister Holmberg ◽  
Helge Kjøsen ◽  
Synnøve Liaaen-Jensen ◽  
Curt R. Enzell ◽  
...  
Keyword(s):  
Diels Alder ◽  
Steric Orientation

Metals Intercalated in Graphite. I. Reduction and Oxidation

1972 ◽  
Vol 50 (18) ◽  
pp. 3058-3062 ◽  
Author(s):  
J.-M. Lalancette ◽  
G. Rollin ◽  
P. Dumas
Keyword(s):  
Electrochemical Reduction ◽  
Primary Alcohol ◽  
Reaction Products ◽  
Selective Method ◽  
Experimental Procedure ◽  
Steric Orientation ◽  
Reduction And Oxidation ◽  
High Yields ◽  
Reducing Properties

Potassium in graphite shows distinctive reducing properties towards carbonyls. The reaction products can be related to a mechanism similar to electrochemical reduction. The steric orientation of the reduction can be explained by the particular structure of potassium–graphite.Chromic anhydride in graphite offers a new selective method of preparation of aldehydes from the corre sponding primary alcohol. This method is characterized by its specificity, high yields and a simple experimental procedure.

Periodate Oxidation of Phenols. X. Structural and Steric Orientation in the Diels-Alder Dimerization of o-Quinols.

1971 ◽  
Vol 25 ◽  
pp. 2775-2776 ◽  
Author(s):  
Erich Adler ◽  
Krister Holmberg ◽  
Hideo Miyake ◽  
O. F. Nielsen ◽  
P. Klæboe ◽  
...  
Keyword(s):  
Periodate Oxidation ◽  
Diels Alder ◽  
Steric Orientation ◽  
Oxidation Of Phenols
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