Enantioselective Syntheses of 2-Alkyl- and 2,6-Dialkylpiperidine Alkaloids: Preparations of the Hydrochlorides of (−)-Coniine, (−)-Solenopsin A, and (−)-Dihydropinidine
作者:Timothy J. Wilkinson、Nathan W. Stehle、Peter Beak
DOI:10.1021/ol9912534
日期:2000.1.1
[reaction: see text] Sequences of lithiation-substitution, enantioselective hydrogenation, and diastereoselective lithiation-substitution provide efficient highly enantioselective syntheses of 2-substituted and cis and trans 2,6-disubstituted piperidines. The methodology is demonstrated by syntheses of (-)-coniine, (-)-solenopsin A, and (-)-dihydropinidine as their hydrochlorides.
[反应:见正文]锂化-取代,对映选择性氢化和非对映选择性锂化-取代的序列提供了2-取代的和顺式和反式2,6-二取代的哌啶的高效高对映选择性的合成。该方法论通过合成(-)-芥氨酸,(-)-血脂素A和(-)-二氢吡啶为盐酸盐来证明。