Synthesis of 24(28)-Methylene-1α-Hydroxyvitamin D<sub>3</sub>, a Novel Vitamin D<sub>3</sub> Analogue
作者:Wei Guo、Zhijie Fang、Hongliang Li、Yanan Liu
DOI:10.3184/174751914x13941144023496
日期:2014.4
24(28)-Methylene-1α-hydroxyvitamin D3 was synthesised in 13 steps from vitamin D2. The key step of the synthesis involved the Wittig–Horner olefination of a nor-vitamin D2 aldehyde with diethylphosphono-3-methyl-2-butanone. The resulting enone was followed by reduced methylenation, photoisomerisation and deprotection then gave the target compound.