The 4-hydroxyheptadecan-7-one (1) and 14-hydroxyoctadecan-8-one (2), two new hydroxyketones isolated from leaves of Chiococca alba, were synthesized, for the first time, by hydroxy-functionalized nitroalkanes 4 and 9, respectively, via two chemoselective key steps: i) nitroaldol condensation with basic alumina, and ii) direct Nef conversion of nitroalkenes to carbonyl derivatives with sodium hypophosphite
首次从羟基绿藻(Chococca alba)的叶中分离出两个新的羟基酮
4-羟基
庚烷-7-(1)和1
4-羟基
十八烷-8-(2),分别是由羟基官能化的硝基烷4和9合成的,分别通过两个
化学选择性关键步骤:i)与碱性氧化铝进行硝基羟醛缩合,和ii)用
次磷酸钠将硝基烯烃直接Nef转化为羰基衍
生物,以保留OH基团。