Stereoselective Synthesis of a Series of New N-Alkyl-3-hydroxypiperidine Derivatives Containing a Hemiketal
作者:Haibo Wang、Hairong Luo、Xiaofeng Ma、Wei Zou、Huawu Shao
DOI:10.1002/ejoc.201100533
日期:2011.7.6
A series of new N-alkyl-3-hydroxypiperidine derivatives containing a five-membered hemiketal were synthesized from 1-C-acetylmethyl sugars. Based on the stereochemistry of the products obtained, a plausible mechanism is illustrated. A new approach to the hemiketal, which has undergone hydrogenation in the presence of Pd/C and beta-elimination and intramolecular cycloaddition with 1% NaOMe in methanol
从 1-C-乙酰甲基糖类合成了一系列含有五元半缩酮的新 N-烷基-3-羟基哌啶衍生物。基于所得产物的立体化学,阐明了一种可能的机制。报道了一种半缩酮的新方法,该方法在 Pd/C 存在下进行氢化,β-消除和分子内环加成与甲醇中的 1% NaOMe。