A Comparison of Infrared Frequencies of 19-Nor Steroids and their 19-Methyl Analogues

Authors: Rosenkrantz, Harris1; Kupfer, David2; Brodie, Harry J.1; Hayano, Mika1; Forchielli, Enrico1

Source: Applied Spectroscopy, Volume 16, Issue 3, Pages 73-113 (March 1962) , pp. 89-92(4)

Publisher: Society for Applied Spectroscopy

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Abstract:

The infrared absorption spectra of thirteen 19-nor steroids in the C-19 series were recorded by the potassium bromide dispersal technique It was found that a shift to higher frequencies occurred for the bands that have been correlated with structures in saturated 3-hydroxysteroids, 3α, 5α shifted from 998 to 1017 cm−1, 3β, 5α from 1042 to 1060 cm−1, 3α, 5β from 1035 to 1060 cm−1, and 3β 5β from 1033 to 1055 cm−1. A band near 881 cm−1 helped identify Δ4-19-nor structures, while a similar band near 885 and/or 825 cm−1 seemed characteristic for the Δ1-19-nor compound.

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370262774415886

Affiliations: 1: Department of Biology, Clark University, Worcester, Massachusetts and the Worcester Foundation for Experimental Biology, Shrewsbury, Massachusetts 2: Department of Biology, Clark University, Worcester, Massachusetts and the Worcester Foundation for Experimental Biology, Shrewsbury, Massachusetts; present address: Lederle Laboratories, Pearl River, N. Y.

Publication date: March 1, 1962

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