A Modified Synthesis of the Antiosteoporosis Drug Alfacalcidol via a Key Photochemical Transformation of 1α-5,6-trans-Vitamin D3
作者:Xianghai Guo、Junyuan Ding、Zhouliangzi Zeng、Ningzhi Liu
DOI:10.1055/s-0033-1339867
日期:——
Alfacalcidol (1α-hydroxyvitamin D3) is an important clinical drug for the treatment of osteoporosis. Its practical synthesis has been intensively pursued across academia. The difficulties of separating 5,6-cis and 5,6-trans isomers in the current process was avoided by photochemicaltransformation of the 5,6-trans isomer into the 5,6-cis isomer. Employing vitamin D3 as a starting material, alfacalcidol was