Synthesis of (Z)-alkene-containing cis-proline dipeptide mimetics using samarium(II) diiodide (SmI2)-mediated reductive alkylation reaction
作者:Yoshikazu Sasaki、Akira Shigenaga、Nobutaka Fujii、Akira Otaka
DOI:10.1016/j.tet.2006.12.055
日期:2007.2
Therefore, constrained mimetic, which corresponds to Pro-dipeptides whose amide bond is replaced with an (E)- or (Z)-alkene, is a useful bioprobe for elucidating the structure–function relationship of peptides and proteins. Herein, we report the synthesis of cis-(Z)-alkene-containing Pro-dipeptide mimetics via a samarium(II) diiodide (SmI2)-mediated reductive alkylation reaction.
氨基酸和脯氨酸之间的酰胺键可以采取反式或顺式构象。构象影响肽和蛋白质的结构和功能。因此,受约束的模拟物(其酰胺键被(E)-或(Z)-烯烃取代的前二肽相对应)是阐明肽与蛋白质的结构-功能关系的有用生物探针。在这里,我们报告通过via(II)二碘化物(SmI 2)介导的还原烷基化反应合成含顺式(Z)-烯烃的前二肽模拟物。