紫外光产物在尿嘧啶固相体系中的色谱研究。

J Fidy, S Gáspár, K Raksányi
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引用次数: 0

摘要

紫外光产物分别在蒸发和再结晶薄层和干燥水溶液两种类型的尿嘧啶固相体系中产生。用梯度洗脱柱色谱法比较了两种体系中光化学反应的性质。在干燥溶液中分离出两种类型的环丁烷二聚体,但在再结晶薄层中只发现一种类型。蒸发层的反应效率比干燥层的反应效率高得多。根据尿嘧啶的晶体结构和以往薄晶层光化学的吸收光谱研究,指出在蒸发薄层中产生的单一型光二聚体是晶体基质中光化学反应过程的特征;其结构与顺式立体异构体二聚体相同。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Chromatographic study of the UV photoproducts in uracil solid phase systems.

UV photoproducts were induced in two types of uracil solid phase systems: in evaporated and recrystallized thin layers and in dried aquaeous solution respectively. The nature of the photochemical reactions in the two systems was compared by gradient elution column chromatography. In the case of dried solution two types of cyclobutane dimers were isolated, but in recrystallized thin layers only one type was found. The efficiency of the reaction in evaporated layers was much higher than in those produced by drying. Based on the crystal structure of uracil and previous absorption spectroscopic studies of the photochemistry of thin crystalline layers it was stated, that the single type of photodimers produced in evaporated thin layers is characteristic for the photochemical reaction proceeding in crystal matrix; and its structure was proposed to be identical with that of the cis-syn stereoisomer dimer.

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