Abstract
A complete analysis of the proton NMR spectra of the six stable steroisomers of retinals has been undertaken. 11-cis-Retinal, the prosthetic group of the visual pigment rhodopsin, relieves steric strain between 10 H and 13 CH3 groups by a skew geometry around diene unit C11=C12–C13=C14.
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PATEL, D. 220 MHz Proton Nuclear Magnetic Resonance Spectra of Retinals. Nature 221, 825–828 (1969). https://doi.org/10.1038/221825a0
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DOI: https://doi.org/10.1038/221825a0
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