Pyrazine alkaloids via dimerization of amino acid-derived α-amino aldehydes: biomimetic synthesis of 2,5-diisopropylpyrazine, 2,5-bis(3-indolylmethyl)pyrazine and actinopolymorphol C
作者:Sandhya Badrinarayanan、Jonathan Sperry
DOI:10.1039/c2ob06935k
日期:——
of amino acid-derived alpha-amino aldehydes provides a short, biomimetic synthesis of several 2,5-disubstituted pyrazine natural products. The alpha-amino aldehyde intermediates were generated in situ by the hydrogenolysis of their Cbz-derivatives. It was found that a judicious choice of reaction solvent facilitated hydrogenolysis, dimerization and oxidation to the natural product in a one-pot operation
A New Method for the Synthesis of Symmetrical Disubstituted Pyrazines
作者:Nora Rojas、Yvonne Grillasca、Alejandrina Acosta、Irene Audelo、Gustavo García de la Mora
DOI:10.1002/jhet.1748
日期:2013.7
Through the self‐condensation of α‐amino aldehydes, the synthesis of symmetrical disubstitutedpyrazines was achieved in a three‐step one‐pot reaction. The α‐amino aldehydes were easily obtained by treating methyl esters of natural α‐amino acids with diisobutylaluminium hydride.