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Volumn 10, Issue 21, 2008, Pages 4783-4786

Diastereoselective synthesis of cyclopentapyridazinones via radical cyclization: Synthetic studies toward halichlorine

Author keywords

[No Author keywords available]

Indexed keywords

ALKALOID; CYCLOPENTANE DERIVATIVE; FREE RADICAL; HALICHLORINE; HETEROCYCLIC COMPOUND; PYRIDAZINE DERIVATIVE; SPIRO COMPOUND; UNCLASSIFIED DRUG;

EID: 58149161581     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol801849u     Document Type: Article
Times cited : (21)

References (53)
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    • Fukuzawa, S.-i; Tsuchimoto, T. Synlett 1993, 803.
    • (d) Fukuzawa, S.-i; Tsuchimoto, T. Synlett 1993, 803.
  • 10
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    • For examples of hydrazone acceptors, see: (a) Sturino, C. F, Fallis, A. G. J. Am. Chem. Soc. 1994, 116, 7447
    • For examples of hydrazone acceptors, see: (a) Sturino, C. F.; Fallis, A. G. J. Am. Chem. Soc. 1994, 116, 7447.
  • 14
    • 37049083001 scopus 로고    scopus 로고
    • For examples of imine acceptors, see: (e) Tomaszewski, M. J, Warkentin, J. Chem. Commun. 1993, 966
    • For examples of imine acceptors, see: (e) Tomaszewski, M. J.; Warkentin, J. Chem. Commun. 1993, 966.
  • 17
    • 84918748913 scopus 로고    scopus 로고
    • For examples of N-aziridinylimine acceptors, see: (h) Kim, S, Kee, I. S, Lee, S. J. Am. Chem. Soc. 1991, 113, 9882
    • For examples of N-aziridinylimine acceptors, see: (h) Kim, S.; Kee, I. S.; Lee, S. J. Am. Chem. Soc. 1991, 113, 9882.
  • 19
    • 0029908898 scopus 로고    scopus 로고
    • For examples of oxime acceptors, see: (j) Keck, G. E, Wager, T. T. J. Org. Chem. 1996, 61, 8366
    • For examples of oxime acceptors, see: (j) Keck, G. E.; Wager, T. T. J. Org. Chem. 1996, 61, 8366.
  • 29
    • 60949089906 scopus 로고    scopus 로고
    • During our initial studies, the enantiomer of the compounds shown in Schemes 2, 3, 5, and 6 was used. For simplicity, only one enantiomer is consistently shown throughout all schemes.
    • During our initial studies, the enantiomer of the compounds shown in Schemes 2, 3, 5, and 6 was used. For simplicity, only one enantiomer is consistently shown throughout all schemes.
  • 38
    • 30744443898 scopus 로고    scopus 로고
    • For a comprehensive review of synthetic approaches, see: c
    • For a comprehensive review of synthetic approaches, see: (c) Clive, D. L. J.; Yu, M.; Wang, J.; Yeh, V. S. C.; Kang, S. Chem. Rev. 2005, 105, 4483.
    • (2005) Chem. Rev , vol.105 , pp. 4483
    • Clive, D.L.J.1    Yu, M.2    Wang, J.3    Yeh, V.S.C.4    Kang, S.5
  • 39
    • 29444435217 scopus 로고    scopus 로고
    • For recent synthetic approaches not covered in ref 9c, see
    • For recent synthetic approaches not covered in ref 9c, see: Andrade, R. B.; Martin, S. F. Org. Lett. 2005, 7, 5733.
    • (2005) Org. Lett , vol.7 , pp. 5733
    • Andrade, R.B.1    Martin, S.F.2
  • 48
    • 60949092471 scopus 로고    scopus 로고
    • The more obvious sequence of alkylation after radical cyclization was found to give much lower levels of diastereoselectivity for introduction of the methyl group ca. 2:1
    • The more obvious sequence of alkylation after radical cyclization was found to give much lower levels of diastereoselectivity for introduction of the methyl group (ca. 2:1).
  • 53
    • 60949105132 scopus 로고    scopus 로고
    • See intermediate 6 in ref 9a.
    • See intermediate 6 in ref 9a.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.