A convenient synthesis of new pyrido[3,2-e][1,4]diazepine-2,5-diones and pyrido[2,3-e][1,4]diazepine-2,5-diones
作者:Abderrahman El Bouakher、Hélène Laborie、Mina Aadil、Ahmed El Hakmaoui、Said Lazar、Mohamed Akssira、Marie-Claude Viaud-Massuard
DOI:10.1016/j.tetlet.2011.07.098
日期:2011.9
4]diazepine-2,5-diones 9, is reported using the condensation of α-amino acid methyl ester derivatives with 1H-pyrido[3,2-d][1,3]oxazine-2,4-dione and 1H-pyrido[2,3-d][1,3]oxazine-2,4-dione. Compounds 8 and 9 were also synthesized by peptide coupling of α-amino acid methyl ester derivatives with β-amino acids (2 or 3) followed by the cyclisation in tetrahydrofuran with sodium hydride (NaH).
一系列吡啶并[3,2- e ] [1,4]-二氮杂-2,5-二酮8和吡啶并[2,3- e ] [1,4]二氮杂-2,5-二酮的便捷合成9,是使用α-氨基酸甲基酯衍生物的缩合用1报道ħ -吡啶并[3,2- d ] [1,3]恶嗪-2,4-二酮和1- ħ -吡啶并[2,3- d ] [1,3]恶嗪-2,4-二酮。还通过将α-氨基酸甲酯衍生物与β-氨基酸(2或3)进行肽偶联来合成化合物8和9,然后在四氢呋喃中用氢化钠(NaH)环化。