Substituent effects on the PMR signals of methyl groups in methyl steroids

Substituent effects on the PMR signals of methyl groups in methyl steroids

Proton magnetic resonance (PMR) signals were assigned to each of the methyl groups for a variety of C-3 oxygenated 4-monomethyl, 6-monomethyl, 4, 4-dimethyl, and 2, 2-dimethyl steroids related to 5alpha-cholestane series. The effects of various substituents (i.e. methyls at C-4, C-6, or C-2, functio...

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Bibliographic Details
Published in:Chemistry and physics of lipids Vol. 19; no. 2; p. 169
Main Author: Iida, T
Format: Journal Article
Language:English
Published: Ireland 01-06-1977
Subjects:
Chemical Phenomena
Chemistry
Magnetic Resonance Spectroscopy
Methylation
Steroids
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Summary:Proton magnetic resonance (PMR) signals were assigned to each of the methyl groups for a variety of C-3 oxygenated 4-monomethyl, 6-monomethyl, 4, 4-dimethyl, and 2, 2-dimethyl steroids related to 5alpha-cholestane series. The effects of various substituents (i.e. methyls at C-4, C-6, or C-2, functional groups at C-3, and unsaturated bonds) on the methyl proton resonances have been derived from the assignment. The application of such data to structural and stereochemical problems has also been discussed.
ISSN:0009-3084
DOI:10.1016/0009-3084(77)90097-4