Organocatalytic Chemo-, (<i>E/Z</i>)- and Enantioselective Formal Alkenylation of Indole-Derived Hydroxylactams Using <i>o</i>-Hydroxystyrenes as a Source of Alkenyl Group
作者:Hong-Hao Zhang、Yue-Ming Wang、Yuan-Wei Xie、Zi-Qi Zhu、Feng Shi、Shu-Jiang Tu
DOI:10.1021/jo501293m
日期:2014.8.1
sequence, offering an easyaccess to functionalized chiral isoindolo-β-carbolines with one quaternary stereogenic center in high chemo-, (E/Z)-, and enantioselectivities (up to >95:5 cr, >95:5 E/Z, 97:3 er). This approach also represents the first catalytic asymmetric formal alkenylation of isoindolo-β-carboline-derived hydroxylactams, which provides a useful strategy for functionalization of isoindolo-β-carbolines
Asymmetric Synthesis of Tetrahydro-β-carbolines <i>via</i> Chiral Phosphoric Acid Catalyzed Transfer Hydrogenation Reaction
作者:Qin Yin、Shou-Guo Wang、Shu-Li You
DOI:10.1021/ol400995c
日期:2013.6.7
Chiral phosphoric acidcatalyzed enantioselective transfer hydrogenation of hydroxylactams has been realized to provide enantioenriched tetrahydro-β-carbolines in dioxane at room temperature (up to 94% yield, 90% ee).