作者:Suleyman Patir、Nesimi Uludag
DOI:10.1016/j.tet.2008.10.102
日期:2009.1
In this study, a new synthetic route for the total synthesis of (±)-uleine is described. The important step in the synthesis of this alkaloid consists of an intramolecular cyclization of the D ring of the azocino[4,3-b]indole skeleton. Reduction of (N-methyl)3-β-ethyl-4-oxo-2,3,4,9-tetrahydrospiro[1H-carbazole-1,2′(1,3)dithiolane]-2-yl}-2-acetamide with borane yielded the corresponding (N-methyl)
在这项研究中,描述了一种新的合成路线,用于全合成(±)-油酸。合成该生物碱的重要步骤是将偶氮基[4,3- b ]吲哚骨架的D环进行分子内环化。(N-甲基)3-β-乙基-4-氧代-2,3,4,9-四氢螺[1 H-咔唑-1,2'(1,3)二硫杂环戊基] -2-基}-的还原2-乙酰胺与硼烷反应生成相应的(N-甲基)3-β-乙基-4-羟基-2,3,4,9-四氢螺[1 H-咔唑-1,2'(1,3)二硫杂环戊烷] -2-基} -2-乙酰胺经过酸催化的闭环反应,生成偶氮并[4,3- b ]吲哚核。最后,由偶氮基[4,3- b]通过几个步骤完成了(±)-油酸的合成。]吲哚核。