Efficient strategy for the stereoselective synthesis of 2,3-disubstituted benzo[alpha]quinolizidine alkaloids: concise synthesis of (-)-protoemetinol

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초록

The stereoselective synthesis of (-)-protoemetinol has been accomplished through nine steps from a known homoallylic amine. The key steps of the synthesis involve the efficient preparation of an aza-Claisen rearrangement (ACR) precursor using cross metathesis and amide enolate-induced ACR followed by acid-catalyzed transannulation for the elaboration of the benzo[alpha]quinolizine skeleton and three stereogenic centers. This unique synthetic route envisages a unified and versatile strategy for the synthesis of 2,3-disubstituted benzo[alpha]quinolizidine. (C) 2014 Elsevier Ltd. All rights reserved.

키워드

(-)-ProtoemetinolBenzo[alpha]quinolizidine alkaloidCross metathesisAza-Claisen rearrangementTransannulationASYMMETRIC TOTAL-SYNTHESISCLAISEN REARRANGEMENTPROTEIN-SYNTHESISIPECAC ALKALOIDSIN-VITROEMETINEISOMERIZATIONTETRABENAZINE(+/-)-EMETINETUBULOSINE
제목
Efficient strategy for the stereoselective synthesis of 2,3-disubstituted benzo[alpha]quinolizidine alkaloids: concise synthesis of (-)-protoemetinol
저자
Moon, HyunyoungAn, HongchanSim, JaehoonKim, KyeojinPaek, Seung-MannSuh, Young-Ger
DOI
10.1016/j.tetlet.2014.12.030
발행일
2015-01-21
유형
Article
저널명
Tetrahedron Letters
56
4
페이지
608 ~ 611