A sustainable catalytic enantioselective synthesis of norstatine derivatives
作者:Taoda Shi、Changcheng Jing、Yu Qian、Xinfang Xu、Gopi Krishna Reddy Alavala、Xinxin Lv、Wenhao Hu
DOI:10.1039/c9ob02149c
日期:——
to maintain chemo- and enantioselectivity. Control experiments support the mechanism where the reactions proceed through the trapping of hyper-reactive oxonium ylides with imines. Shortly, we report herein the sustainable catalyticenantioselectivesynthesis of both syn- and anti-norstatine derivatives. We believe that this method might shed light on the sustainable synthesis of norstatine derivative-based
A Strategy to Synthesize Taxol Side Chain and (−)-<i>epi</i> Cytoxazone via Chiral Brønsted Acid-Rh<sub>2</sub>(OAc)<sub>4</sub> Co-catalyzed Enantioselective Three-Component Reactions
作者:Yu Qian、Xinfang Xu、Liqin Jiang、Dipak Prajapati、Wenhao Hu
DOI:10.1021/jo101559p
日期:2010.11.5
A new approach to synthesize optically active β-amino-α-hydroxyl acid derivatives via chiral Brønsted acid-Rh2(OAc)4 cocatalyzed three-component reactions of diazo acetates with alcohols and imines is reported. A matched reaction system was identified to give the products in moderate diastereoselectivity and good enantioselectivity. Application of this methodology is demonstrated in the efficient synthesis