摘要
The photoisomerization of provitamin D-3 is carrried out in silica gel-hexane matrix, ethanol and hexane. The results show that in silica gel-hexane matrix and ethanol, the desired product of provitamin D-3 and vitamin D-3 can be obtained in high yield, while the undesirable byproducts are greatly limited.
The photoisomerization of provitamin D-3 is carrried out in silica gel-hexane matrix, ethanol and hexane. The results show that in silica gel-hexane matrix and ethanol, the desired product of provitamin D-3 and vitamin D-3 can be obtained in high yield, while the undesirable byproducts are greatly limited.
基金
This work was supported by the National Natural Science Foundation of China, No. 29971031 and the Chinese Academy of Sciences.
