THE carcinogenic properties of Å"strone, and the close structural relationship between the powerful carcinogenic hydrocarbon methylcholanthrene and the steroids, makes the hypothesis appear justified that perhaps light-cancer of the skin is due to photochemical conversion of steroids situated in the skin into carcinogenic products. We have therefore, in collaboration with Prof. L. Halberstaedter (Jerusalem), begun to investigate the changes brought about by ultra-violet irradiation of steroids, and report here our results with Ã"4-cholestenone (I).
Å"strone 的致癌特性,以及强效致癌碳氢化合物甲基胆
蒽和类
固醇之间的密切结构关系,使得以下假设显得合理:皮肤的光癌可能是由于位于皮肤中的类
固醇的光
化学转化为致癌物质所致。因此,我们与 L. Halberstaedter 教授(耶路撒冷)合作,开始研究类
固醇的紫外线照射所带来的变化,并在此报告我们对 4-
胆固醇 (I) 的研究结果。