STUDIES OF THE EFFECTS OF ULTRAVIOLET LIGHT ON THYROXINE AND ITS ANALOGUES
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概要
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1. Ultraviolet irradiation of thyroxine, diiodotyrosine, and their analogous compounds was carried out to elcidate the process of photodegradation of thyroxine by ultraviolet light.<BR>2. For separation and detection of the degraded products, measurement of ultraviolet and infrared absorption spectra, and paper chromatography, thin-layer chromatography, and column chromatography were carried out.<BR>3. Experimental results revealed that the irradiation of ultraviolet light to thyroxine liberated iodine at first and then cleaved the ether bond in the molecule, and liberated α-phenyl ring from thyroxine. Triiodo-thyronine, diiodotyrosine, monoiodotyrosine, tyrosine, phenylalanine, serine, alanine, and glycine were detected as the photodegradation products.<BR>4. Production of diiodotyrosine from ultraviolet light irradiated thyroxine was confirmed by the measurement of infrared absorption spectrum.
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北関東医学会 | 論文
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