Photo-alteration of hydantoins against UV light and its relevance to prebiotic chemistry |
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| Authors: | Palash K Sarker Jun-ichi Takahashi Yumiko Obayashi Takeo Kaneko Kensei Kobayashi |
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| Institution: | 1. Department of Chemistry and Biotechnology, Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan;2. NTT Microsystem Integration Laboratories, 3-1 Morinosato Wakamiya, Atsugi 243-0198, Japan |
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| Abstract: | Aqueous solutions of 5-substituted hydantoins were irradiated with ultraviolet (UV) light, to investigate their structural stability against UV radiation as well as the possible photolysis products. The photolysis products were identified and the degree of photolysis was measured using reversed-phase and ion-exchange high-performance liquid chromatography. Hydantoin (2,4-imidazolidinedione) was dominantly detected as a photolysis product of 5-substituted hydantoins. With hydrolysis of UV-irradiated 5-substituted hydantoins, glycine and alanine were dominantly detected. These experimental results are important for the prebiotic photochemistry of 5-substituted hydantoins in the formation of hydantoin since they have been detected in Solar System materials. |
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| Keywords: | Hydantoin 5-Substituted hydantoins UV radiation Prebiotic photochemistry Photolysis products |
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