作者:Martin Kranz、Horst Kessler
DOI:10.1016/0040-4039(96)01108-2
日期:1996.7
A new strategy for the synthesis of Boc-Pheψ(E-CHCH)GlyOH (11) is described. The double bond is generated employing a β elimination of the mesyloxy group of 6. This elimination proves to be the key step within the synthesis. Different products are obtained dependent on the base as well as on the reaction conditions. Employing KOtBu leads to E-(5S)-(t-Butyloxycarbonylamino)-6-phenyl-1,3-hexadiene7
对的Boc-PHE的合成的新策略ψ(Ë -CHCH)GlyOH(11)进行说明。通过β消除6的甲磺酰氧基生成双键。事实证明,这种消除是合成过程中的关键步骤。根据碱以及反应条件获得不同的产物。使用KO t Bu导致E-(5 S)-(叔丁氧羰基氨基)-6-苯基-1,3-己二烯7,而NaOMe导致γ消除,导致氮丙啶9。二烯7转化为相应的Pheψ(E-CH = CH)Gly等排烷烃,随后进行硼氢化和琼斯氧化反应。