Stereoselective Bromination−Suzuki Cross-Coupling of Dehydroamino Acids To Form Novel Reverse-Turn Peptidomimetics: Substituted Unsaturated and Saturated Indolizidinone Amino Acids
作者:Junyi Zhang、Chiyi Xiong、Wei Wang、Jinfa Ying、Victor J. Hruby
DOI:10.1021/ol020160a
日期:2002.11.1
C4-substituted dipeptide reverse-turn mimetics unsaturated (9a, 10a) and saturated (11a) azabicyclo[4.3.0] alkane amino acid derivatives. The side chain was introduced by bromination of dehydroamino acid intermediates followed by Suzuki coupling. Hydrogenation of the bicyclic dehydroamino acid 9a afforded saturated bicyclic lactam 11a. This approach can be further explored for the synthesis of a variety
已开发出一种通用且有效的方法来制备C4取代的二肽反向模拟物,其不饱和(9a,10a)和饱和(11a)氮杂双环[4.3.0]烷烃氨基酸衍生物。通过溴化脱氢氨基酸中间体,然后进行铃木偶联来引入侧链。双环脱氢氨基酸9a的氢化得到饱和双环内酰胺11a。可以进一步探索这种方法以合成具有芳基和烷基侧链官能团的各种此类β-turn模拟物。[反应:看文字]