作者:Jalal Lazaar、Christophe Hoarau、Florence Mongin、Francois Trécourt、Alain Godard、Guy Quéguiner、Francis Marsais
DOI:10.1016/j.tetlet.2005.03.176
日期:2005.5
Cerpegin (1) was synthesized through a ‘one-pot’ reaction in 71% overall yield. Lithiation of commercially available 2-methoxynicotinic acid (2) as its lithium salt using LTMP, followed by addition of acetone at low temperature and a specific acidic treatment of the intermediate 3 thus obtained, gave the 1,1-dimethyl-3,4-dioxo-1,3,4,5-tetrahydrofuro[3,4-c]pyridine (4). The latter was finally selectively
通过“一锅法”反应合成了Cerpegin(1),总产率为71%。使用LTMP将市售的2-甲氧基烟酸(2)锂化,然后在低温下添加丙酮,并对所得中间体3进行特定的酸性处理,得到1,1-二甲基-3,4-二氧-1,3,4,5-四氢呋喃[3,4- c ]吡啶(4)。最后,后者使用甲基碘和碳酸铯选择性地烷基化,得到cerpegin(1)。