An efficient synthesis of cobactin T, a key component of the mycobactin class of siderophores
作者:Jingdan Hu、Marvin J. Miller
DOI:10.1016/0040-4039(95)01318-c
日期:1995.9
Nα-Cbz-L-lysine t-butyl ester was oxidized by dimethyldioxirane to give nitrone 8c, which was converted to azopine derivative 15. Subsequent coupling and deprotection reactions afforded an efficient synthesis of cobactin T (19).
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