Solid-Phase Synthesis of Aza-Kahalalide F Analogues: (2<i>R</i>,3<i>R</i>)-2-Amino-3-azidobutanoic Acid as Precursor of the Aza-Threonine
作者:Irene Izzo、Gerardo A. Acosta、Judit Tulla-Puche、Tommaso Cupido、Maria Jesus Martin-Lopez、Carmen Cuevas、Fernando Albericio
DOI:10.1002/ejoc.200901345
日期:2010.5
The solid-phase synthesis of six novel analogues of Kahalalide F (KF), a natural product currently undergoing Phase II clinical trials, is reported. In all these compounds, amides were used as isosteres for the depsi bond. For two of these compounds, we performed an efficient synthesis of N-Fmoc-protected (2R,3R)-2-amino-3-azidobutanoic acid, precursor of the aza-threonine. This is the first example
据报道,目前正在进行 II 期临床试验的天然产物 Kahalalide F (KF) 的六种新型类似物的固相合成。在所有这些化合物中,酰胺被用作 depsi 键的等排体。对于这些化合物中的两种,我们进行了 N-Fmoc 保护的 (2R,3R)-2-amino-3-azidobutanoic 酸(氮杂苏氨酸的前体)的有效合成。这是在固相中制备含氮杂-苏氨酸的肽中叠氮基团的固相还原的第一个例子。