作者:Sharan K. Bagal、Stephen G. Davies、Ai M. Fletcher、James A. Lee、Paul M. Roberts、Philip M. Scott、James E. Thomson
DOI:10.1016/j.tetlet.2010.12.035
日期:2011.4
Diastereoselective conjugate addition of lithium (R)-N-benzyl-N-(α-methylbenzyl)amide to tert-butyl sorbate and subsequent chemo- and diastereoselective ammonium-directed olefinic oxidation of the resultant conjugate addition product tert-butyl (3S,αR)-3-[N-benzyl-N-(α-methylbenzyl)amino]hex-4-ene} have been used as the key steps in a concise and highly selective asymmetric synthesis of the 2,3,6
(R)-N-苄基-N-(α-甲基苄基)酰胺的非对映选择性共轭加成到山梨酸叔丁酯上,随后对合成共轭加成产物叔丁基(3 S,α - [R)-3- [ ñ苄基ñ - (α -甲基苄基)氨基]己-4-烯}已被用作以简洁的关键步骤和的高度选择性不对称合成2,3,6-三脱氧-3-氨基己糖升-花生胺 该两个化学操作的序列允许快速组装分子结构,并促进从商业上可得的山梨酸仅7个步骤从头进行不对称合成甲基N,O-二乙酰基-α- 1 -α - ac胺,总产率为15%。