The synthesis and transformations of 2-[2-ethoxycarbonyl-2-(2-pyridinyl)ethenyl]amino-3-dimethylaminopropenoates. the synthesis of substituted β-amino-α,β-didehydro-a-amino acid derivatives
作者:Lucija Jukić、Simon Rečnik、Jurij Svete、Branko Stanovnik、Simona GoliČ Grdadolnik
DOI:10.1002/jhet.5570380409
日期:2001.7
Alkyl (Z)-2-[(E)-2-ethoxycarbonyl-2-(2-pyridinyl)ethenyl]amino-3-dimethylaminopropenoates 7 and 8 were prepared from ethyl 2-pyridinylacetate (1) in two steps. Substitution of the dimethylamino group with alkyl-, aryl-, or heteroarylamines afforded the corresponding β-alkyl- 22–24, β-aryl- 25–35, and β-herteroaryl-amino-α,β-didehydro-α-amino acid 36 and 37 derivatives, intermediates for further preparation
由2-吡啶基乙酸乙酯(1)分两步制备烷基(Z)-2-[((E)-2-乙氧基羰基-2-(2-吡啶基)乙烯基]氨基-3-二甲基氨基丙烯酸酯7和8。与烷基二甲氨基取代,芳基- ,或heteroarylamines得到相应的β -烷基- 22-24,β -芳基- 25-35,和β-herteroaryl氨基α,β二脱氢α氨基酸36和37衍生物,用于进一步制备各种杂环系统的中间体。通过各种核磁共振技术确定两个双键周围的取向。