Asymmetric synthesis of N-substituted N-hydroxyureas
作者:Krzysztof Z. Łączkowski、Marcin M. Pakulski、Marek P. Krzemiński、Parasuraman Jaisankar、Marek Zaidlewicz
DOI:10.1016/j.tetasy.2008.03.008
日期:2008.4
Asymmetric synthesis of (S)-N-(1-arylethyl)-N-hydroxyureas, (S)-N-(6-methoxy)- and (S)-N-(6-benzyloxy-2,3-dihydrobenzofuran-3-yl)-N-hydroxyurea— lipoxygenase inhibitor, is described. Three approaches to the formation of the N-hydroxyurea moiety at the stereogenic center have been used. The first one, via the reaction of (R)-6-benzyloxy-2,3-dihydrobenzofuran-3-ol with N,O-bis(phenoxycarbonyl)hydroxylamine