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- W1565301736 abstract "Abstract A search of the infrared spectra of several ring- D ) steroid lactones was carried out in order to recognize characteristic frequencies of these molecules. Sufficient differences existed among the spectra to permit the identification of each compound. In addition it was found that bands of relatively strong intensity consistently occurred near 1219 (8.20), 1110 (9.00) and 989 cm −1 (10.11 μ). Cross-comparisons with compound absorption curves in the literature indicated that the three bands correlated with a D -homolactone structure. The 1219 cm −1 (8.20 μ) band could be assigned to the vibrations of the unit and the 1110 cm −1 (9 μ) to the oscillations of the grouping of the lactone structure. Although the 1219 (8.20) absorption was obliterated in the acetoxy derivatives of the ring- D ) steroid laotones, the 1110 cm −1 (9 μ) band appeared clearly and consistently. The present data on ten ring- D ) steroid lactones suggested that the aforementioned three maxima can be useful for identifying D -homolactone structures." @default.
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- W1565301736 date "1959-01-01" @default.
- W1565301736 modified "2023-09-25" @default.
- W1565301736 title "The infrared absorption spectra of ring-D steroid lactones—II" @default.
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- W1565301736 doi "https://doi.org/10.1016/0371-1951(59)80029-1" @default.
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