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Volumn 36, Issue 15, 1997, Pages 1621-1623

Enantioselective Diels-Alder Approach to Angucyclinones from (S)-2-(p-Tolylsulfinyl)-1,4-naphthoquinone and Substituted Racemic Vinylcyclohexenes

Author keywords

Angucyclinones; Antibiotics; Asymmetric synthesis; Cycloadditions; Quinones

Indexed keywords


EID: 0030763184     PISSN: 05700833     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.199716211     Document Type: Article
Times cited : (50)

References (40)
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    • Boyd, V.A.1    Sulikowski, G.A.2
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    • Larsen, D.S.1    O'Shea, M.D.2    Brooker, S.3
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    • Matsuo, G.1    Miki, Y.2    Nakata, M.3    Matsumura, S.4    Toshima, K.5
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    • note
    • The relative configuration was established by comparison with a similar intermediate prepared by Sulikowski [5d] in the total synthesis of SF 2315A.
  • 36
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    • note
    • When the cycloaddition was carried out in water the reaction was faster (completed in 12 h at room temperature) but with a lower enantiomeric excess (20%).
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    • note
    • 3] for 7b and 7d. The required racemic compounds were obtained from racemic quinone 1 [8].
  • 39
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    • The absolute structure was determined by comparing refinements of both configurations, and confirmed by refining Flack's x parameter (G. Bernardinelli, H. D. Flack, Acta Crystallogr. Sect. A 1987, 43, 75-78). Crystallographic data (excluding structure factors) for (+)-5d have been deposited with the Cambridge Crystallographic Data Centre as suplementary publication no. CCDC-100127. Copies of the data can be obtained free of charge on application to The Director, CCDC, 12 Union Road, Cambridge CB2 1EZ, UK (fax: int. code +(1223)336-033; e-mail: deposit@chemcrys.cam.ac.uk).
    • (1987) Acta Crystallogr. Sect. A , vol.43 , pp. 75-78
    • Bernardinelli, G.1    Flack, H.D.2
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    • note
    • These results contradict those reported by Sulikowski et al. [4g], who described no reaction for a similar system with DBU in benzene at 0°C.


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