Expedious and practical synthesis of the bioactive alkaloids rutaecarpine, euxylophoricine A, deoxyvasicinone and their heterocyclic homologues
作者:Abdulkareem Hamid、Abdelhakim Elomri、Adam Daïch
DOI:10.1016/j.tetlet.2006.01.031
日期:2006.3
deoxyvasicinone (3), is reported from suitable aromatic amino acids 7 or corresponding aromatic amino esters 8 and imino-thioethers 5 or 6 in a one-step sequence in moderate to good yields. The key step of this methodology is based on an intramolecular aza-displacement of a methylthio group followed by spontaneous cyclodehydration. Furthermore, when aromatic amino esters 8 were used instead of amino acids
从适当的芳香族氨基酸7或相应的芳香族氨基酯8或相应的芳香族氨基酯8和亚氨基硫醚5或6中报告了嘧啶β-咔啉1和2的有效组装,包括生物活性生物碱芸香菜碱,硫氧鸟嘌呤A和脱氧vasicinone(3)。一步顺序以中等到良好的产量。该方法的关键步骤基于甲硫基的分子内氮杂置换,然后进行自发的环脱水。此外,当使用芳族氨基酯8代替氨基酸时,发生串联氨基-甲硫基置换/氨基酯环化。