Ergopinacone and 7-dehydrocholesterol-pinacone have been prepared by two different methods, viz., the boiling method and the carbon dioxide method. The products obtained by the two methods as well as diacetates and dibenzoates derived from them have been compared. It has been indicated that the two methods yield the same products.In conclusion the author wishes to express his hearty thanks to Prof. Y. Urushibara for his kind guidance and encouragement. He acknowledges also his indebtedness to Dr. K. Yamasaki for his advice and kindness in taking absorption spectra, and to Mr. Yasohachi Yamaguchi and to Ozi Seisi Co. for generous help.
Ergopinacone 和
7-去氢胆固醇-皮那
酮通过两种不同的方法制备,即煮沸法和
二氧化碳法。比较了这两种方法获得的产品以及从这些产品衍生的二
醋酸酯和二
苯甲酸酯。结果表明,这两种方法产生相同的产品。最后,作者衷心感谢 Y. Urushibara 教授的指导和鼓励。同时,他也对 K. Yamasaki 博士在吸收光谱方面的建议和善意表示感激,感谢 Yamaguchi Yasohachi 先生以及 Ozi Seisi 公司提供的慷慨帮助。