Tetrahedron p. 16565 - 16574 (1997)
Update date:2022-08-03
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Diazoketone 5b, available in one step from proline benzyl ester, underwent conversion to quinolizidine 8b with high diastereoselectivity (19:1 8b/7b) and in surprisingly high enantiomeric excess (75%). The key step presumably occurs via spirocyclic ylide
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