Modified Julia olefination and α aminoxylation reactions mediated convergent synthesis of 1α, 24 (R)-dihydroxyvitamin D3 (tacalcitol)
作者:Andrea Martínez、Hugo Santalla、Fátima Garrido、Generosa Gómez、Yagamare Fall
DOI:10.1016/j.tetlet.2017.07.103
日期:2017.9
A convergent synthesis of tacalcitol has been achieved starting from inexpensive and commercially available isovaleraldehyde and easily available Inhoffen-Lythgoe diol. Key steps include a proline catalyzed α aminoxylation and a Julia-Kocienski olefination.
从廉价的和可商购的异戊醛和容易获得的Inhoffen-Lythgoe二醇开始,已经实现了塔骨化醇的收敛合成。关键步骤包括脯氨酸催化的α氨氧基化和Julia-Kocienski烯烃化。