paper summarizes the results of recent investigations into the photochemical isomerizations in the vitamin D field which were the subject of further research in our laboratories during the last decade. A new scheme is proposed showing the various reactions occurring during irradiation of a provitamin D. The quantum yields of these reactions at 2537 Å were determined. On the basis of these data the effect
本文总结了最近对
维生素D领域中的光
化学异构化研究的结果,这些研究是过去十年来我们实验室中进一步研究的主题。提出了一种新方案,该方案显示了
维生素D照射期间发生的各种反应。确定了这些反应在2537Å下的量子产率。根据这些数据,可以解释所使用的光的波长对产品产量的影响。
麦角固醇及其光异构体的发射光谱是在80°K下测量的。没有观察到
磷光。讨论了光
化学环化,开环和顺式/反式异构化机理的某些方面。