Asymmetric Domino Nitro-Michael/Horner-Wadsworth-Emmons Reaction for Disubstituted Cyclohexenecarboxylate Annulation: Efficient Synthesis of Dipeptidyl Peptidase IV Inhibitor ABT-341 and Influenza Neuraminidase Inhibitor
作者:Jiang Weng、Jun-Ming Li、Feng-Quan Li、Zhi-Sheng Xie、Gui Lu
DOI:10.1002/adsc.201200093
日期:2012.7.9
An asymmetric domino nitro‐Michael/Horner–Wadsworth–Emmons (HWE) reaction involving α,β‐unsaturated aldehydes and nitro phosphonates has been developed, which gave 4,5‐disubstituted cyclohexenecarboxylates with high stereoselectivities (dr up to >20:1, ee 83–92%) in good yields (44–76%). Furthermore, using this methodology as a key step, a short and practical synthesis of pharmaceutically useful compounds
已开发出涉及α,β-不饱和醛和硝基膦酸酯的不对称多米诺硝基-Michael / Horner-Wadsworth-Emmons(HWE)反应,该反应可生成具有高立体选择性的4,5-二取代的环己烯羧酸酯(dr高达> 20:1,ee 83–92%),高产(44–76%)。此外,使用该方法作为关键步骤,还完成了简短而实用的药学上有用的化合物(如二肽基肽酶IV抑制剂ABT-341和流感神经氨酸酶抑制剂)的合成。