Synthesis of the four d,l-pairs of 2-amino-3-phenylnorbornane-2-carboxylic acids II. The use of 5(4H)-oxazolones as dienophiles.
作者:C. Cativiela、M.D. Díaz de Villegas、J.A. Mayoral、A. Avenoza、J.M. Peregrina
DOI:10.1016/s0040-4020(01)86269-4
日期:1993.1
The Diels-Alder reaction between both geometric isomers (Z)- or (E)-2-phenyl-4-benzylidene-5(4H)-oxazolone and cyclopentadiene is studied. The cycloadducts are converted into the aminoacids through simple reactions allowing the synthesis of the four d,l-pairs of 2-amino-3-phenylnorbornane-2-carboxylic acids.
研究了两种几何异构体(Z)-或(E)-2-苯基-4-亚苄基-5(4H)-恶唑酮与环戊二烯之间的狄尔斯-阿尔德反应。环加合物通过简单的反应转化为氨基酸,从而可以合成4个d,l对的2-氨基-3-苯基降冰片烷-2-羧酸。