A new facile chemoenzymatic synthesis of levamisole
摘要:
An efficient and facile chemoenzymatic synthesis of levamisole by employing lipase-mediated resolution of 3-hydroxy-3-phenylpropanenitrile followed by its conversion to beta-amino alcohol as the key intermediate is described. (C) 2004 Elsevier Ltd. All rights reserved.
Efficient Routes to a Diverse Array of Amino Alcohol-Derived Chiral Fragments
作者:Sina Haftchenary、Shawn D. Nelson、Laura Furst、Sivaraman Dandapani、Steven J. Ferrara、Žarko V. Bošković、Samuel Figueroa Lazú、Adrian M. Guerrero、Juan C. Serrano、DeMarcus K. Crews、Cristina Brackeen、Jeffrey Mowat、Thomas Brumby、Marcus Bauser、Stuart L. Schreiber、Andrew J. Phillips
DOI:10.1021/acscombsci.6b00050
日期:2016.9.12
Efficient syntheses of chiral fragments derived from chiral amino alcohols are described. Several unique scaffolds were readily accessed in 1–5 synthetic steps leading to 45 chiral fragments, including oxazolidinones, morpholinones, lactams, and sultams. These fragments have molecular weights ranging from 100 to 255 Da and are soluble in water (0.085 to >15 mM).
Enantioselective Cobalt‐Catalyzed Hydroboration of Ketone‐Derived Silyl Enol Ethers
作者:Wenke Dong、Zhiyang Ye、Wanxiang Zhao
DOI:10.1002/anie.202117413
日期:2022.7.18
heteroatom-substituted alkenes is rarely explored and remains unprecedented, especially the earth-abundant metal catalyzed ones. Herein, the first cobalt-catalyzed asymmetric hydroboration of ketone-derived silylenolethers is reported, providing a convenient approach to access valuable enantiopure β-hydroxy boronic esters, which features broad substrate scope and excellent enantioselectivities.