Total synthesis of (±)-alantrypinone by hetero Diels-Alder reaction

被引:51
作者
Chen, ZC [1 ]
Fan, JF [1 ]
Kende, AS [1 ]
机构
[1] Univ Rochester, Dept Chem, Rochester, NY 14627 USA
关键词
D O I
10.1021/jo030273n
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
An efficient total synthesis of (+/-)-alantrypinone 4 by hetero Diels-Alder reaction of a novel pyrazine diene 9 with either a functionalized 3-alkylideneoxindole or 3-methyleneoxindole itself is described. The Diels-Alder reactions provide both the desired regiochemistry and exo selectivity. An interesting anionic equilibration between alantrypinone 4 and its epimer 31 or between its ester analogues 23 and 24 has been demonstrated, and a mechanism has been proposed.
引用
收藏
页码:79 / 85
页数:7
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