作者:Susen Werle、Thorsten Fey、Jörg M. Neudörfl、Hans-Günther Schmalz
DOI:10.1021/ol071228v
日期:2007.8.1
projected intermediate for the total synthesis of marine serrulatane and amphilectane diterpenes, was efficiently synthesized. Starting from a styrene, asymmetric Rh-catalyzed hydroboration using a novel chiral P,P-bidentate ligand afforded an organoboron intermediate (93% ee) which was directly used for C-C bond formation (double homologation, Suzuki coupling). The 1,4-trans-disubstituted tetralin skeleton
有效合成了反式7,8-二甲氧基-11,12-脱氢cal草烯,这是一种预计合成的全合成海洋型斯拉拉坦烷和两性烷二萜烯的中间体。从苯乙烯开始,使用新型手性P,P-二齿配体的不对称Rh催化的硼氢化反应提供了有机硼中间体(93%ee),该中间体可直接用于CC键的形成(双重同源性,Suzuki偶联)。1,4-反式二取代的四氢萘骨架是在严格非质子条件下(Me2AlCl)通过Friedel-Crafts型阳离子环化选择性形成的,以通过非对映选择性氢化物转移抑制质子催化的歧化反应。