作者:William Carruthers、Peter Coggins、John B. Weston
DOI:10.1039/p19900002323
日期:——
The usefulness of the cycloaddition of alkenes to 2-alkyl-2,3,4,5-tetrahydropyridine oxides for the preparation of trans-2,6-dialkylpiperidines is confirmed by a stereoselective synthesis of (±)-andrachamine. Peroxy acid oxidation of 9-oxa-1-azabicyclo[4.3.0]nonanes does not lead regioselectively to the corresponding 2-alkyl-2,3,4,5-tetrahydropyridine oxide, as had previously been claimed.
通过(±)-andrachamine的立体选择性合成,证实了将烯烃环加成至2-烷基-2,3,4,5-四氢吡啶氧化物上以制备反式-2,6-二烷基哌啶。如先前所主张的,9-氧杂-1-氮杂双环[4.3.0]壬烷的过氧酸氧化不会选择性地导致相应的2-烷基-2,3,4,5-四氢吡啶氧化物。