Asymmetric synthesis of N-1-(heteroaryl)ethyl-N-hydroxyureas

被引:30
作者
Bosiak, Mariusz J. [1 ]
Krzeminski, Marek P. [1 ]
Jaisankar, Parasuraman [2 ]
Zaidlewicz, Marek [1 ]
机构
[1] Nicholas Copernicus Univ, Dept Chem, PL-87100 Torun, Poland
[2] Indian Inst Chem Biol, Kolkata 700032, W Bengal, India
关键词
D O I
10.1016/j.tetasy.2008.03.026
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The asymmetric synthesis of two 5-lipoxygenase inhibitors (R)-N-1-(benzofuran-2-yl)ethyl-AT-hydroxyurea, 99% ee, and (R)N-1-(benzo [b]thiophen-2-yl)ethyl-N-hydroxyurea, 95% ee, is described. The enantioselective reduction of 1-(benzofuran-2-yl)ethanone oxime O-benzyl ether and 1-(benzo[b]thiophen-2-yl)ethanone oxime O-benzyl ether with borane oxazaborolidine, generated from (1R,2S,3R,4S)-3-amino-1, 7,7-trimethylbicyclo [2.2.1]heptan-2-ol, was used for the formation of the stereogenic centres. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:956 / 963
页数:8
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