作者:Maël Charpentier、Marcus Hans、Johann Jauch
DOI:10.1002/ejoc.201300179
日期:2013.7
Myrtucommulone A (1), which was isolated from myrtle and other species of the myrtaceae family, was synthesized through an enantioselective Michael addition of isobutyryl phloroglucinol (5) to isobutylidene syncarpic acid (4) that was induced by a chiral Al–Li–BINOL (1,1′-bi-2-naphthol) complex [(S,S)-ALB]. Because there is significant steric crowding in Michael acceptor 4, myrtucommulone A (1) was
从桃金娘和桃金娘科其他物种中分离出来的桃金娘 A (1) 是通过异丁酰间苯三酚 (5) 与异丁叉合果酸 (4) 的对映选择性迈克尔加成合成的,该加成是由手性 Al-Li-BINOL 诱导的(1,1'-bi-2-naphthol) 复合物 [(S,S)-ALB]。由于迈克尔受体 4 中存在显着的空间拥挤,因此获得了 ee 值为 70% 的桃金娘酮 A (1) 以及化学产率为 77% 的 meso-1。