In(OTf)3‑Catalyzed Cascade Cyclization for Construction of Oxatricyclic Compounds
A highly diastereoselective cascade cyclization reaction has been developed for establishing a series of oxatricyclic compounds using Chan’s diene and simple keto alkynal substrates with only 1 mol % of In(OTf)3 as the catalyst in 82–92% yields. The potential utility of this synthetic strategy has...
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Veröffentlicht in: | Organic letters 2018-12, Vol.20 (24), p.7912-7915 |
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Hauptverfasser: | , , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | A highly diastereoselective cascade cyclization reaction has been developed for establishing a series of oxatricyclic compounds using Chan’s diene and simple keto alkynal substrates with only 1 mol % of In(OTf)3 as the catalyst in 82–92% yields. The potential utility of this synthetic strategy has been demonstrated in model studies for the construction the core structures of 1α,8α:4α,5α-diepoxy-4,5-dihydroosmitopsin and cortistatin A. |
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ISSN: | 1523-7060 1523-7052 |
DOI: | 10.1021/acs.orglett.8b03461 |