A Telescoped Route to 2,6-Disubstituted 2,3,4,5-Tetrahydropyridines and 2,6-<i>syn</i>-Disubstituted Piperidines: Total Synthesis of (−)-Grandisine G
作者:James D. Cuthbertson、Richard J. K. Taylor
DOI:10.1002/anie.201208118
日期:2013.1.28
the conversion of 6‐acyl cyclohexenones into 2,6‐disubstituted 2,3,4,5‐tetrahydropyridines and, after diastereoselective reduction, 2,6‐syn‐disubstituted piperidines has been developed. The scope of this process is outlined by the synthesis of cis‐2‐methoxycarbonylmethyl‐6‐pentylpiperidine and the first total synthesis of the Elaeocarpus‐derived alkaloid (−)‐grandisine G (see scheme).
到grandisines隆重路线:一种用于6-酰基环己烯酮转化成方法2,6-二取代的2,3,4,5-四氢吡啶并,非对映选择性还原后,2,6-顺式二取代的哌啶类化合物已被开发。顺式-2-甲氧基羰基甲基-6-戊基哌啶的合成和Elaeocarpus衍生的生物碱(-)-grandisine G的第一个全合成(参见方案)概述了该过程的范围。