作者:Masakazu Atobe、Naoki Yamazaki、Chihiro Kibayashi
DOI:10.1016/j.tetlet.2005.02.110
日期:2005.4
asymmetric synthesis of (+)-abresoline has been achieved starting from the (S)-1-(aryl)homoallylic amine, which was prepared enantioselectively by the method based on allylation of the (R)-2′-(2-naphthyl)-bearing hydroxyoxime ether. This synthetic route employs the TiCl4-induced intramolecular Mannich-type cyclization of the 1-azadiene-bearing ketal amine as the key steps to afford stereoselectively the cis-2
从(S)-1-(芳基)均烯丙基胺开始实现了(+)-萘乙酸的第一次不对称合成,该胺是通过基于(R)-2'-(2-的烯丙基化的方法)对映选择性地制备的。含萘基的羟基肟醚。该合成途径采用TiCl 4诱导的带有1-氮二烯的缩酮胺的分子内曼尼希式环化作为关键步骤,以立体选择性地提供顺式-2,6-二取代的哌啶,然后进行CBr 4 / PPh 3诱导的脱氢环化用于将氨基醇精制为反式-4-芳基喹oli嗪。