Mild and Efficient Lewis Acid-Promoted Detritylation in the Synthesis of <i>N</i>-Hydroxy Amides: A Concise Synthesis of (−)-Cobactin T
作者:Shyh-Ming Yang、Bharat Lagu、Lawrence J. Wilson
DOI:10.1021/jo701411d
日期:2007.10.1
Lewis acid promoted deprotection of O-trityl hydroxylaminederivatives is described. A range of acid-labile protecting groups, such as N-Boc and O-TBS, were tolerated under these mild conditions. The present method is applicable to the synthesis of a broad range of hydroxylaminederivatives, including N-hydroxy amides (hydroxamic acids), N-hydroxy sulfonamides, and N-hydroxy ureas, which often exhibit