作者:Céline Jousse、Didier Desmaële
DOI:10.1002/(sici)1099-0690(199904)1999:4<909::aid-ejoc909>3.0.co;2-7
日期:1999.4
A successful new strategy for the synthesis of erythrinanes is reported. (Nitromethyl)arene derivative 16 was condensed with aldehyde 17 to give nitro aldol 19. After removal of the hydroxy group, the subunits 26a,b, containing the erythrinane rings A and D, were formed by intramolecular Michael addition. Reduction of the nitro function, followed by cyclization of the resulting amino group with the
报道了一种成功的合成赤藓红的新策略。(硝基甲基)芳烃衍生物16与醛17缩合得到硝基醛醇19。除去羟基后,通过分子内迈克尔加成形成含有赤藓烷环A和D的亚基26a、b。还原硝基官能团,然后将所得氨基与附加的乙酸酯基团环化,得到带有角芳基的双环内酰胺 29a、b。通过甲基苯基亚砜的杂迈克尔加成在 29a 和 29b 的氮原子处进行双碳延伸,然后进行普默勒型环化,分别得到顺式和反式 11-苯基硫代赤藓聚糖 8-ones 35a 和 35b。C-11 处的还原脱硫在 8 个步骤中从 16 提供了所需的 erythrinan-8-ones 39a 和 39b。