作者:Donatella Giomi、Renzo Alfini、Alessandra Micoli、Elisa Calamai、Cristina Faggi、Alberto Brandi
DOI:10.1021/jo201830b
日期:2011.11.18
1-(2-Pyridyl)-2-propen-1-ol, obtained by vinylation of commercially available picolinaldehyde, resulted a good starting material for the synthesis of the indolizidine skeleton. In particular, a simple process involving bromination, reduction, and nucleophilic substitution (via elimination and addition) allowed an easy conversion of the starting material into (±)-lentiginosine in ∼27% overall yield
通过将市售的吡啶甲醛进行乙烯基化而获得的1-(2-吡啶基)-2-丙烯-1-醇,是合成吲哚并立定骨架的良好起始原料。尤其是,涉及溴化,还原和亲核取代(通过消除和添加)的简单过程可以使原料轻松地以约27%的总产率转化为(±)-龙胆草碱。